For me just now having what seems to be the same problem, installing the “Enable JQuery Migrate Helper” plugin solved the problem. The terms of service review apparently relies on a jquery function that no longer works without the helper plugin.
I have a similar problem.
What works for me is:
1. Save all of the codes in a text file or something so you can enter them later
2. Disconnect the account
3. Re-connect the account with the updated (or the same) information.
While the above process works for me, I seem to have to do it about once a week. It seems like the OAuth authorization times out or some similar type of problem.