I had my garden completely redone last November 2020, by beginning of this year the grout had failed and lifted, guy came back out late spring to early summer to regrout, since that's been done I have noticed a lot of the paving seems to rock, some not so much but some you can hear it moving quite a bit, anyway he has come back out after after about 5 months of asking (didnt say he was coming and didn't knock on) he told me by text 2 days later to say none were loose and that all the only thing that needs doing is the grout to be replaced asap or it will not hold the flags and he reckons it's a maintenance job.任何想法我可以做