Well, this didn’t take long.
Sadly the answer is no, you can’t use this service with the plugin as it is. These are the RPC commands allowed: https://support.blockdaemon.com/hc/en-us/articles/360032625252
You are not allowed to issue some commands that are used by the plugin, most importantly getnewaddress, sendtoaddress and getbalance.
In any case, if you are still interested in setting up a full node, you can email me, or post here about the difficulties you encountered, and I can try to help.