Buyer unable to make purchase ?

[dsdsign]

I received an email (below)  from a potential buyer who wanted to buy two of our items in separate listings.

I have no idea of what "setting" might be the problem...  HELP!  - Thx

Buyer sent:

"Thank you! I just tried to purchase both of the 54 drawer units and it says I can only purchase one due to seller settings. Is there a way we could purchase both of them? "

[inceptions]

At this link:

https://www.ebay.com/bmgt/buyerrequirements

Uncheck the boxes shown in the screenshot below: