I Cannot Delete Stickerly Sticker Packs From WhatsApp

I have accumulated too many stickers on WhatsApp and want to clean them up, but only the stickers in my favorites section can be deleted. I cannot figure out how to remove the non-favorite sticker packs that were created through the Sticker.ly application.

Under the “My Stickers” section, I currently have 9 different sticker packs, and I want to delete all of them completely from WhatsApp. Normally, there is supposed to be a “Remove” button in this section for other sticker packs, but for some reason that option does not appear for these Sticker.ly packs.

I am also attaching a screenshot of the issue for reference. If anyone knows how to permanently remove Sticker.ly sticker packs from WhatsApp when the “Remove” button is missing, I would appreciate the help because this has become very frustrating.