Thanks for your post on our Community Forums and I'm sorry to see you've been having an issue with the TV Go reset devices function
Can you tell me if you've been able to perform this action since your post, or if this is still on going?
If this is still on going, can you try opening a web browser on a laptop or PC and clearing the cache on the browser and then giving it a try for me? If this doesn't work for you, and for extra vigilance, please try and alternative browser to see if that let's you complete the request
If you're still struggling after these troubleshooting options have been attempted, come back to us and we'll see to take this to PM to resolve for you