Newsletter keeps changing me to unsucbsribed

I have this very strange situation.
I have myself subscribed to my newsletter. (newsletter plugin)

Now I keep receiving notifications being unsubscribed.
After checking, indeed my status is changed to unsubscribed.

Everytime I change this again to ‘confirmed ‘ only to receive the same confirmation mail again about being UNsubcribed. And yes, it does change my setting to ‘unscubsribed’ again. There is a few hours interval between changing my status to confirmed and receiving the next unsubscribed notification

It seems that only I am suffering from this strange behaivure by the newsletter plugin.

Does anyone have a clue why this happens?