Hey @Barryb527, 
Thanks for your post. This is a known issue in our backlog and we appreciate your patience as we hope to address this in the future. In the meantime, you should be able to log onto the website to clear out the notifications.

I am also having the same issue and it’s quite annoying to see notifications on the app when I have been in and read them all. 

On the app it shows I have 20 odd new notifications but when I open it up and look there may be only 2 or 3.