Roblox game crushes in launcher and RobloxStudio for users on Windows while on the phone and MacOS everything is ok( I'm the owner of the game) - roblox

The Roblox game I'm working on with my team is huge with many quests in it. It is already online with over 1M players. Since yesterday no one can log into this game from Windows while from the phone and MacOS everithig is OK.
I have watched every tutorial on same error but it didn't work for me
I found someone who have had the same error https://devforum.roblox.com/t/game-keeps-crashing-in-studio-and-in-game/1526925/10 but as I said it didnt work for me
I tried to reinstall both Roblox launcher and roblox studio, I have cleaned the cash, reseted character to zero and created a new account. Nothing works

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Game not showing

Whenever my friend opens a project from our organization, everything is missing. However, for me, it's all there. Can anyone help?
Details
-He has a Unity Teams Seat
-He has a manager role
-We're on the same unity version
I tried reinviting him to the project, but it still doesn't show up.

Unity3D Player Error "Receiving unhandled NULL exception Obtained 22 stack frames."

I have developed a Unity3d Mac standalone app, which crashed after a while with the above mentioned error - the whole app gets frozen.
I have pages with a video, which I load and un-load dynamically when entering/exit the page. Most of the time the app crashed when I leave the page with the video to the menu. Anyone any idea, I did find anything valuable answer to this matter :(
----- Tests -----
After a few test runs, I narrowed it down to the video. Not sure what exactly the issue is, but when I played a video and leave the page the app freezes...sometimes immediately, sometimes after a while.
Unity 2018.1f
Tested on : Mac OSX 10.12.6 & OSX 10.11.6
After long tests and try-outs, we found a general problem with Unity and continues playing videos. After updating everything, as well as to the latest Unity2018.2 version - it finally was working well. As per Unity changelog, they did some fixes on the VideoPlayer.
Good luck.

Unity3D gives hundrends of errors when building the game

so my Unity worked fine until now, last time I built the game was yesterday and everything worked fine. Since yesterday the only thing that I did is that I changed some colliders and removed facebook gamecenter plugin. Now, when I try to play the game, everything is fine, but when I try to build it, it starts giving me 250 errors in total.
The last error always says :
"Error building Player because scripts had compiler errors"
Others error are connected to the standard assets.
Screenshots:
For some reason this happens. There a few options of fixing it, but the easiest one to simply re-install Unity.
PS: You wont lose any data.

Unity3d crashes when trying to change platform or building after upgrading to win10

http://prntscr.com/cfakce this is what happened when I'm entering any script, when I'm changing to mobile input this show up http://prntscr.com/cfalpw.
Whenever I'm trying to build the project or changing platform it crashes.
I changed my win7 to win10 (had to) and I think it may screwed my project but I'm not really sure, tried to search on Google for those errors and found nothing.
Someone told me on the Unity forum that it had something to do with UnityEditor but didn't had really idea how to fix it.
When I had win7 (before the change) everything worked perfectly fine.
Any ideas?
Unity version: Unity 5.4.0f3 (64-bit) thought it might help.
new: When I'm writing using at the start of any script it doesn't complete it to Unity.Engine or Unity.Editor it doesn't even have this option, like it got deleted or something. How do I bring back those Unity.editor and engine? I think it's the real problem :)
Another thing is that when I got win10 the C drive is now F and I've got new SSD drive which is the new C, everything stayed on the C drive but they didn't work or was used perfectly, so I redownloaded everything like Skype, steam, Origin and of course UNITY, the project folder I dragged to my desktop and then opened the game folder on this Unity I downloaded, I think that's what made the problem because when i enter Unity and press open, and going back to F drive>users>myname>dekstop>UNITY>mygame and open it in that path instead of what i have dragged (which it the same folder but on different place) it let me switch platform, does not let me build but at least it's not crashing just giving me the same errors without crashing, i don't know if this has something to do with but just gave the info cause maybe you will find this helpful to help me.

GameKit authenticateWithCompletionHandler stuck

I'm having a classic everything-worked-yesterday-nothing-works-today kinda day.
I set up Game Center yesterday. Managed to log in, get leaderboards, get achievements etc.
Today, everything stopped working. authenticateWithCompletionHandler doesn't call the completion handler, even for an error.
I tried several iPhones, rebooting them, rebooting the mac, deleting and installing the app and more (all hints gathered from the internet).
I figured it was a temporary Game Center Sandbox issue, but then noticed it was working fine on the simulator. So I retargeted my own code, had another reboot, and now it doesn't even work on the simulator!
When I try to open the Game Center App it's in "Loading..." state, and doesn't get out of it.
What am I doing wrong? What happened between everything was working, to nothing is?
Log out of your current GameCenter account in your iphone.. Install the app again and launch the app.. Note that it should prompt you to sign in.. If not, check your codes to ensure that it calls the function to authenticate the user is being called..