Hey, your keys in Hub and the Extension are separate and do not recover each other. Do not mix them, it won't be of use to you.

If you have Alby Account connected to your Hub, you can simply Add wallet (in the Extension) and then choose Alby Account, so the Extension uses our API to talk with getalbycom which talks to your Hub...

...or you can directly link the Extension to your Hub via NWC, find the instructions in your Hub's store, or in the Extension go to Add - > Bring your own wallet