You should definitely Clear Storage as well as Cache.
Also I think worth experimenting does it make a difference using only mobile data or only Wi-Fi.
There is this troubleshooting guide. Sometimes it might need cycling through the steps so that you are able to sign T&C.
Edit, repair link.
https://doc.e.foundation/support-topics/app_lounge_troubleshooting.html
Also try avoid European peak / weekend times.