I use the free version of Square's online shop and I have it linked to my Facebook and Instagram shops, so I know it's definitely possible...but I did it at the beginning of the pandemic and cannot for the life of me remember how I did it.
But I did find this thread that might be able to help? Check out Valentina's "best answer".
@livenow It's definitely weird that it only works on Facebook...have you logged into the Facebook business side of things and taken a poke around there? Sometimes it's as simple as a "toggle" being on or off under the Instagram category.
