Canva links when clicked do not translate into template and instead only "view only" for limited clients

So weird I have been using Canva and glide to offer pre-made content for my customers for 3 years now without a glitch. AND just in the last 4 days clients are sending me messages that the links no longer work. Most have iphones and I have the latest operating systems and they have tried to reinstall both the glide app and canva app. The glide app works perfectly from their laptop or desktop but just not on their iphones. Any ideas?

So you have a button that opens a Canva link that should put a template into the signed-in user’s email, but now it suddenly stops functioning?