Welcome to the community!
Thanks for raising this to us. We'd love to help check the availability of the NBN on the new address, to better understand the situation. Shoot me a private message with your account details (Username/Customer ID) together with the address on file.
I am an over 10 years TPG user. My moving in address is XXX. It can be shown on nbnco and other providers except TPG. Please give me hand , waiting for your reply.
Thanks so much.