Thank you for your answer!
Well, then I have noticed a bug in the token balance tracking by Moralis.
The server URL is https://cdw5as0nfzd3.moralis.io:2053/server
The server has the latest version - 0.0.234
I have two tokens on that (watched by Moralis server) address (0xf70f0b44E6737717eCbAF1eDE4C5DF1bA3e999Db) - recMATIC and MTX, see my screenshot, please:
The MTX token balance is shown in the server’s dashboard in the PolygonTokenBalance class right out of the box, but the recMATIC token is not.
The MTX token was fetched with the invoking of the “depositEther” function from the Matic.js and that works with Moralis for balance tracking.
The recMATIC token was fetched with the invoking of the “subscribe” method of a custom smart contract and the value was sent as a transaction option - that doesn’t work with Moralis for balance tracking, but it is shown in Metamask.