I just logged in to SEDE with the new login thing (which was updated because Google was phasing out the old OAuth system). It seems to have not associated me with my old profile - I'm now jon.doe18288.
Additionally, when I click my profile link at the top of the screen (https://data.stackexchange.com/users/18287/jon-doe18288), I get this:
I don't like this. How can I associate my new OAuth login (email didn't change) with my old account, and not get errors when trying to view my profile?