…and you’ve replaced
XXX with your coin’s symbol, correct?
Also, did you get to step 6? Did you ensure that one of the outputs of the transaction is a user deposit address?
Did you enable WordPress logging and check the logs, just in case? It’s unlikely, but possible, that when you submit the TXID, there might be some error.
Finally, can I ask, which wallet you’re using? I can try to install the same wallet and verify that it’s compatible.