Resetting node used data amount keeps returning to 0

The first thing - fix the crashes. In your case seems your disk is failing a writeability check with the default timeout (the disk subsystem is slow).
Optimize it

Or increase a timeout for the check if you know that you did everything, but it’s still slow.

See also:

Put/uncomment in your config.yaml, save the config and restart the node. Then wait until it will be finished for all trusted satellites (may take several days to finish). Do not restart the node/PC without a strongly requirement to let it finish. Otherwise it will start from the scratch.

exactly the reason. Since the databases doesn’t have an actual info (they are empty), your dashboard will be way off until the used-space-filewalker would fill it with the collected usage.

Yes. For this exact satellite. Three more to go.