Welcome to the community!
There are different cause of Transfer/Speed Issue that you may experience.
In the event that you experience dropouts via Wireless/Wi-Fi connection we did an article that you may find helpful see links below.
We have created this article that can guide you on How to Check for NBN Network Outage
In your case, we're able to locate the account using your community details we've seen that the service is connected to our network. Should you need further assistance, feel free to search community for help or chat with us at https://www.tpg.com.au/support/contact/ and we'd be glad to assist you.
I am on FTTB 100/20 service but the upload speed has been terrible today, just done a speed check again after a router reboot and its the same, download ok at about 93mb, but upload of only about 1mb!
Tried the TPG tech support chat but said everyone was busy. Hoping a tech support team member can jump in on this for me?