I am currently updating my entire bathroom, and I just installed a new toliet. I purchased the All-in-One option, and it came with a wax ring. I didnt replace the existing flange, and all seemed to be working very well for a few weeks. I now recently noticed, that I have a leak from underneath my tiles, not at the base of the toliet. Have you ever encountered this before? Could it be the old Flange? I do not see any water when I flush however, it is just all from under the tiles, and seaping up through the grout on the floor. Any suggestions are helpful. Thank you!