If you mean a few hours of difference, then the problem may be related to the incorrect timezone setting on the tracker.
Regardless of your location, please try setting the timezone 0 (UTC) on the tracker and wait for some time if the old data came with the future time.
This may change the situation with new messages, but it will not work to change the already received ones.
If you specify your username, model and tracker IMEI, then we will be able to study out data. You can write about it at firstname.lastname@example.org.