14 days to Closing(house built in 2010) and just found out from Insurance that the owner had a few claims $2.5k, $6.6k, $650 and $750k. We enquired with insurance what is this $750k claim since the only big declared issue we know was the water damage. What should I take care of before closing?

So when we found out it was such a huge claim, we were obviously shocked but we thought it was a typing error including real estate agent from both side, and even the insurance company agent(who is helping us with home insurance) thought the same. Turns out the claim is genuine and it is from 2022. By far we know that the owner claimed that there was a water damage and he has lost $400k worth of valuables, $200k worth the fixes and $150k is for his stay in some other house until this house gets repaired. This owner also has some other properties. Now we are first time home buyers and cannot understand what did he do in the house as part of repair that was worth $200k in the name of water damage(which usually is $15k-$20k). Although the inspection is done and there is no big issue except for a lot of handyman fixes. On the advice of attorney we have asked the owner to share the details of what all repairs were done. The house looks good post inspection but are there any legal things we should we worry about? Should we get anything added to the contract legally so later in life we do not have to worried about any of this? We are worried about what if in next 4-8 years there is another water damage or any other genuine issue, will insurance deny protecting our house, since there is such history? Please suggest, I will truly appreciate!! 🙏