Subscription cjange didnt work

Changed from monthly to yearly plan, because I liked the app. Now I can’t use tourer+.

I am logged in the right account. Google play store says I own the subsription and to open the app to verify.

ITEM_ALREADY_OWNED -

Code:6777003

Ah, you tried to change your subscription outside of the app? Just to verify, have you tried opening the app on your Android phone and go to the pricing page and wait for a few seconds?

Did you cancel the subscription in the meantime? I saw that it is disabled?

Yes, so when I go to the app and press upgrade, sometimes a code error internal appears.
And when I click upgrade, the google play store says I already own the subscriptions. Then I press okay and get sent to the app, where the app gives the error already owned.

In the google play store it states that to confirm the subscription I need to open the app.

Ok got it. Do you use a VPN / PiHole or anything of that sort? Did you try to restart your phone?