Was I hacked?

I went to open my NAS from the DS finder app and it asked me to reauthenticate. It warned me the SSL cert was not correct but did say it was issued by Synology Inc. then I saw the URL and name of the mas was not mine and there was additional "synr-us2" before my NAS name and it did have my admin account there.

I didn't authenticate but logged in via local connection and am resetting my password.

Thoughts? Anything else I should check?