Often it is the tank to bowl connection leading and running down the back of the toilet. When he installed the wax did he get compression of the wax?

We know the leak isn't coming from the tank. I asked him if he got a compression and he said no. He had no idea what that was.

Did the wax squash down? Set the toilet and lift it back up to see if the toilet is making the wax squeese down smaller. You will have to reform the wax higher before you reset it.

If the wax is not compressed then you need to raise your flange. Others try two waxes or flange extender but I don't feel you get a good life from other options than a properly set flange on top of the finished floor.

Thank you!!! My husband redid it and raised the flange and it isn't leaking anymore.

Thanks so much for you help!!

Without a woman getting involved us men would not have been able to fix it.