I had total success with M-Power on mouldy carpet before now but the mould was surface only.
There could be water trapped beneath the tiles which could continue to cause problems so it may be wise to consider uplifting / replacing.
Steve who posted earlier was a fitter in a past life, he'll be able to advise better than most.
p.s. I tried uploading a couple of pictures but forum not having it for some reason, tried the new way and the old way.......