This is the way to go if you start from scratch, in case you already have some sat pointing to an address from you couldn't sign, you can wait until reach the min amount to withdraw, or focus in see how could you sign with an specific address from your backend node.

Next time, sign with an address you can control (sparrow is a good default) and as darth said, the bolt12 invoices is from one part of the process and is independent of the address.