randon change of links in alrady created pages

The platform keeps randomly changing the links assigned to certain buttons. Sometimes I add an element, and all links on the site have been changed to something else. This is insane and extremely infuriating. How can I avoid this from happening? At the moment, I am not trusting your platform that when I save a link to a button, it is going to stay that way, and that is a terrible thing for your platform to be in. I am having to do it 4 or 5 times, and I am sure I will have to do it even more times. So infuriating. Can you please look into this? This is really serious!