500px Integration Not Fetching Images

I have my 500px account connected to Squarespace, and I can see it connected on both Squarespace Connected Accounts and 500px. I have quite a lot of photos on my 500px account just on my Profile, in Galleries, and in a Portfolio, but whenever I add a 500px block to a page it says that there are no photos on the account.

Am I missing something? Is there a permissions/organizational thing I need to do on the 500px side that I haven't done? I even uploaded a few photos just to see if it needed something super recent.

500px account: https://500px.com/p/rwltwo?view=photos

Yes, having the same issue