suddenly verified app not verified

I have installed a Profile/Device Management and the app has been working fine.

Now when I try to open the app it says;

"Unable to Verify App... An internet connection is required to verify trust of the developer... "

In Settings it now says;

"An app from developer... is not verified on this iPhone and will not run until it is verified using your network connection"

I have network connection and have been using this app up until now.

When I tap Verify App>Verify nothing happens.

if i uninstall and reinstall and re-trust and redo my login info it works !

how do i stop this process i have too many apps to be doing this several times a month. ive lost some apps i cant re-find aswell.

Any help would be deeply appreciated.

Thanks