What is causing the separation? The middle has separated so bad it cracked. I’m scared to use it or put weight on it. It’s not in direct sunlight and has only been used about 5 times. I clean with damp warm moist cloth. I paid a lot of money for this set about two years ago from local work workers to try to support local.. but now they are ignoring my concerns and said I didn’t care for it properly. They said I need to condition it regularly. What do y’all use to clean and condition maple wood tables with?! There is no gloss finish on it just stain. Is there a way to fix the gaps?