OK so i cleaned my tiles and grout in our bathroom using bi carb and vingar and now have grout missing from inbetween the tiles!!

Please tell me i didnt cause this? that there must have been a weakness there?? our bathroom is 3 years old at the most.

I might get the tiler back sometime this week to take a look, now we have to use the dreaded other bathroom as this has happened in the shower area!

Next time i will get a base, tiles look great but really, not working