That was not a good idea. Your husband is going to have to give them his national insurance number for his account and then if HMRC starts asking questions you will need to explain that you are really him.
Why did you do it that way? Are they both business accounts?
By the way, this on your listings has been out of date for about three years:
Payment and Shipping
we only accept payment via PayPal and ship your order to your PayPal account address.
