How to fix a 403 error on the checkout button using Gift Reggie?

Hi, our checkout button when using a third party app called Gift Reggie, shows an error message :

403 Error## Forbidden

Must be a manager to perform this action.

It works on the rest of our site.

Link to a gift registry page (where the issue is)

https://hopsongrace.com/apps/giftregistry/registry/152804

Link to a normal product page and how it should work (and used to work prior to today)

https://hopsongrace.com/products/toulouse-creme-brulee-dish?_pos=1&_sid=353a16176&_ss=r

If one of you genius people knows how to fix this, I would be BEYOND grateful.

1 Like

@reblev

that issue app side can you please contact App Support team bcz your store working fine