We get the codes from the Fetch remote guide (last updated November 2017) which for TCL have already been published by a user in this thread.
If they don't work, please contact Fetch as unfortunately this is not something we can assist with.
Hisense codes are: 1363, 1314, 0208, 1026, 1073, 0698, 0891, 0780, 0009, 1069, 2098, 2341, 2371, 2658
Complete waste of time enrolling to the YesCrowd as all I ever get is 'no's.
No response to the TCL codes in 2 years.
I've given up on both TCL and Optus now.
Why bother? It's just a fake marketing tool.
It does look like Fetch have changed their Contact Us page since that post.
If you have a Facebook account, they respond to customer enquiries on their Facebook page.