Charge 2 not tracking my walks

[PipsMai]

Since purchasing a new phone (Samsung A51) my tracker has not been tracking my daily walks. Charge 2 is paired to the phone and synchs without problem. When I initiate walk on the tracker it either comes up with a message "check fitbit app" or it starts to track but stops tracking after 100 to 200 metres . I have tried uninstalling and reinstalling the app,  turning the phone off and restarting without success.

[JuanJoFitbit]

Hi @PipsMai, it's great to see you in our Fitbit Community. Regarding the activities tracking issue that your Charge 2 has experienced, I appreciate the time spent trying to get it resolved before contacting our forums.

I was able to get in touch with our Support team and was told that they will reply to your email soon in order to follow up and assist you accordingly. Please keep an eye on your email account.

I'll be around if any question arises.