I have a really annoying problem with my signature that says this I don't know why 'Your signature has been modified, please read the rules' is there Please Help - xSyh
Moved to help. This has always been a problem, try taking the link address to the picture and shorten it with a link shortener, then in the place you put the signature go to insert image and paste the shortened link.
It says that because your signature contained something that has broken the forum rules in some way. Your signature has been changed to comply to the rules. Most likely, someone reported you on forums for an inappropriate forums signature. I have not ever had my signature changed, so I have no idea if it is possible to remove that message, sorry.
This is wrong. -- In Xenforo (the forum software MV uses), the administrator of the forum, can change or limit users to the amount of pictures, text, emojis, etc. In your signature. If you're getting that message. You're most likely using too many pictures with text, etc. It usually doesn't like more than one image, unless they're super-small... I never limited my users to their signature, so I wouldn't know how Xenforo moderates the kind of thing. But I know this is the reason why, if you noticed - that 'rules' hyperlink literally leads nowhere.
It usually happens when your signature contains too many characters. If it's happening with a link to an image, you can use a URL shortener, such as goo.gl, to make it fit. The limit is pretty small. :/ Closing as question has been answered. If you have any further questions, feel free to message me.