Beware

We found this plugin’s Firebase attribute mapping does not support an important Firebase attribute type, Custom Claims, immediately after purchasing and installing the Pro version. They were only willing to look at adding this attribute to their mapping mechanism for a fee, and used their refund policy as a poor excuse to keep the $$, even if their product will not be used. So if you want to give it a go request a free trial first, and do NOT part with your money until you have verified 100% it will work for your use case.