If it won't let you update, that's usually because it's already been updated. You can confirm this by looking for the revision code in the app. You can find it by clicking on the "Account" tab and scrolling all the way down. The latest is v14.25.5 build 384.it wont let me update it... in the Appstore it only shows open not update.
If i remove the app will you loose the Plug and Charge Certificate or is that not impacted by it?