Hi there @uk_dragon
Thank you so much for your post and welcome back to the community forums.
I am so sorry to hear that you have faced this issue! Can I ask if you are able to access your Hub setting page?
To do this type 188.8.131.52 into your browser and follow the steps to access the page.
Thank you for confirming the phone now allows you to make calls and that you have a dial tone however the phone only rings once when called, I was able to locate you with the information we have and have run some checks this end and have picked up a potential issue, so I can help further I will send you an invite into a private chat, once received click on the purple envelope to accept.