@yewwaik17 Our points and levels occasionally may adjust itself due to some circumstances.
We may sometimes lose points/levels if some of our contributions don’t meet the contribution policies.
Google uses a variety of information, some automated and some manual, to determine if a review or photo follows the Maps user contributed content policies
https://support.google.com/business/answer/2622994
Reviews or photos that don’t follow the policies are marked private; reviews are not deleted however. When this happens, it won’t be shown publicly, hence points are not awarded for it. This can happen even after sometime after our specific contribution date/time.
The other link to that could be useful will be the Local Guides program rules
https://www.google.com/local/guides/rules/
The other situation is, points and levels are calculated on batch processes in the backend, and different sections in Maps app may read from a different source in the database which may have different update process/timings. These batch process may change from time to time, and at times (although not often), may provide some possibly inaccurate changes in points or stats (we usually only notice when points drop, rather than when points increase). But over time, the system will remedy itself as updated batch processes are run in the backend.
There is not much we can do for this except if we as an entire community see a system wide (ie for a majority group of users) outage or change, then we can report for Google to look into it.
In the mean time, I would suggest to keep contributing good quality contributions and don’t worry too much about occasional small fluctuations in points. As long as we keep contributing consistently, out points and levels will slowly go up.
Just keep monitoring this for a few weeks and report back here if you feel the issue persists.