I recently visited an anime sandbox fandom called Kimetsu Sandbox. They displays a very accurate and detailed informations on the anime I'm watching, unlike the official one. However, one of the template they use displayed a very obvious mistake that I wanted to edit, only to find that the page is protected from edits. How do I ask for permission to edit it? Any help would be much appreciated.
The best thing to do would be to leave a message on an admins message wall letting them know about what the edit is. Please note, that if it’s considered of a spam or vandalism nature, it won’t be accepted. However if it’s not, I’m sure the admins will approve it and make the change for you.
To help smooth the process, you should make a copy of the template (may be as a subpage of your user page), add your changes, and link to it in the message so the admin can see that your changes are good.