Unfortunately, for me it doesn't work. I'am redirected to the geocaching.com page, log in, see that logging in is successful, click on "Agree", then get back to Locus with the message:
"Because my login has expired (after 90 days) you're logged out. Please log in again" (but then in Dutch).
Tried multiple times, rebooted, restarted Locus Pro, but unfortunately: no success. Could this have to do with the new API?
I am using Geocaching4Locus 2.2.6 (17878f9) and Locus Pro 3.38.3.