Hello,
Yes, thank you for taking the time to report this issue.
This is an issue that I have corrected in the built-in Bitcoin core adapter, but not in the Multi Coin Adapter.
Try adding your WordPress host’s IP address in an rpcallowip= line, in CIDR notation. Assuming your WordPress IP is 12.23.34.45 and its network is class C, you would add something like:
rpcallowip=12.23.34.45/24
Also, add a rpcbind= line with your wallet’s public ip address. Let’s say your wallet is on IP 21.32.43.54, then you’d add the following, for good measure:
rpcbind=21.32.43.54
(no CIDR notation this time, just an IP).
I will update the Multi Coin Adapter and release a patch today for this.
Let me know if you are still facing difficulties connecting your wallet. If so, let me know what error you see in the wallet logs.
with regards