Hey, see if this helps!
1. Create a shortcut for GW2
2. Rename it “Guild Wars 2 Repair”
3. Right Click the shortcut
4. Go to properties
5. find “Target” and it should say something like this “C:\Program Files (x86)\Guild Wars 2\Gw2.exe” add “-repair” to the end so it should look like this
“C:\Program Files (x86)\Guild Wars 2\Gw2.exe” -repair
6. Press OK
7. Go ahead and double click the shortcut
BTW i had to open it, close it, than open it again for the repair window to come up, hope this works and if it doesn’t, it will take patience but they will fix it! DON’T REINSTALL!!!!