Do you use the updater app? Or put the code manually? There are a few topics dedicated to different transfer modes of FTP which can cause problems with the code integrity checker.
The updater should get the correct files and shouldn’t create integrity problems. However you need to get your current version fixed.
Not sure if it helps to disable the integrity checks via your config/config.php. The updater could enforce a check independently, but perhaps it’s worth a try.
Hard to say. Can you run this without the proxy? This message is generated by the ssl proxy, not sure if your session is just not reachable or if there is a different problem. Perhaps your logfiles contain some information, do you have access via terminal?
This is a shared installation! I can login via ftp without any problems. Running updates for apps have success and all other functions of NC work fine, as expected.
UPDATE:
Now I got it working with following:
complete removing of rewrite rules within .htaccess concerning the SSL proxy of HOSTEUROPE)
within config.php removing of all OVERWRITExxxx settings reffering to SSL proxy
adding my non SSL URL to trusted_domains
After saving the config file, login to NC via non SSL and updating with update_app to 10.02.
Now it works!
No warnings for integrity check anymore, all APP work fine (last check tomorrow)