thanks everyone, my car is a Peugeot and I try turning off, reconnecting and sometimes I have to make a phone call ( which sometimes seems to reset it but sometimes doesn't) i have tried everything even the update but its still hit and miss.i would say 7 times out 10 its OK but the other times I just have to forget it for the day then next morning . .fine 🤷🏻 its so annoying