Where do my votes go?

Indeed, I cannot join Hive daily but if I try to post and read, comment and upvote what I like.
I notice since a few days my votes are zero but also I voted for posts I never read or gave an upvote.
To be honest, I do not understand how this can be possible.
I am not aware I subscribed to some group or delegated my voting power to someone.

So if you can give me a hand, tell me how to figure it out and if so undo it please, let me know.

Source photo