Hi. My patio layer grouted the patio yesterday with bostik wide gap compound. (Masonry). It’s been 24hrs plus and it’s still very soft. Not cured at all. It rained last night (which I mentioned would happen). I spoke to bostik customer services today and they’ve said it will not cure. The all weather type should have been used. The layer has said he will put anything right, but he’s still convinced it’ll cure. I doubt it will. Any advice on this product or any thoughts on if it’ll cure?