Some of our users have reported to us that the "Continue Shopping" link that appears in the PayPal cart (in the top right of the screen) produces strange results when clicked, and is failing to re-direct the user.
If this is occurring for you, you may fix the issue by appending the "shopping_url" parameter to the link. You may do this by modifying your FetchApp PayPal buttons like so:
Please note that after the "?shopping_url=", you will want to add the desired continue shopping URL, not "https://www.fetchapp.com". This can be any URL you wish.
Feel free to submit a ticket for additional assistance.