Tablet not recognizing charger adapter

My tablet is no longer recognizing the factory charger. I keep getting a message that the adapter is incompatible. This is happening with both the charger directly and when I use the cradle. If it weren't recognizing the docking station it would be dead.

I've had the tablet for two years in December but it has been in use pretty much 24/7 for that amount of time since it also serves as my alarm clock.

I suspect that the charging port may be wearing out as the port insert for the cradle was put in each night and the charging cable at some point most days. I don't see anything on your site for repairing this. The battery condition reads good when I check the status in settings.

Do you think my analysis is incorrect.