Hey limex, it's very strange that you were unable to save logins with the "Sign in with" feature. Could you clarify if you are still getting the error? Does it still only happen with Single Sign-on Logins? Does occur on one website or all websites with Single Sign-on? Could you lock/unlock the extension to see if it resolves the error?
Signing in and out of the extension works well when all logins are affected by this error. However, if the "unable to save" error appears only for Single Sign-on items, then we'll have to investigate further.
Please let us know how things are going. Talk to you again soon.
