We are finding more and more that there is a glitch that results in logins being ineffective, i.e., the login is not rejected, but Patent Center acts like it didn't happen. Specifically, the user is not shown the Workbench or any other non-public interfaces--even after they log in. It seems like it usually happens after a successful login and later logout--the non-public interfaces are shown for the initial log in, and subsequent logins for some time after that, e.g., a day or so, fail to show the non-public interfaces. Switching to a new browser, e.g., from Chrome to Edge, seems to fix the issue, although I don't know if the reverse is true.
It is very inconvenient and should be fixed. Our attorneys are starting to refuse to use it at all due to these issues.