Bank not accepting our offer but still having open houses??

Hi! There’s a house near me that’s been on the market for FOREVER. Almost a year. It’s bank owned.

Looks really nice. Obviously not perfect and my realtor cannot find a single major thing wrong with it. He’s even gone to check it out after heavy rain to check out the basement and it was bone dry. So we know we’re missing something and would love to get in there with an inspector. However the bank took forever to get back to us about our offer and when they did they declined. We went over the asking. We’re pre approved and sold our condo so we have a decent size down payment. Why would the bank rather keep this house on the market than accept our offer? Anyone have any ideas? Other than them wanting more money. They’ve had like 6 open houses in the last month and he said they have multiple offers, but clearly they don’t.