Stop notification

[ansramzan597]

hello everyone,
I signed in once my Fiverr account on another android mobile that is my friend’s mobile but after that, I logged out from all other devices but still Fiverr notifications are receiving on that mobile. It’s a security issue for me. how can I stop receiving notifications on other than my personal mobile?

[genuineguidance]

The person that has that mobile needs to delete the app maybe?

GG