Hi @Harvey_Francis, welcome to the forum! 
The topic we linked is this same one, could you add a link to the other one where we suggested logging out and back in?
I found this one where a customer reported Zebra devices are crashing after login, are you experiencing the same issue?
On the other hand:
This other app is also being open on the Zebra devices and causing no issues?
Thank you in advanve!