Binance withdrawals do not appear in Metamask's assets

Hi, I made two withdrawals/deposits from Binance (BNB crypto) to Metamask on different dates (2021-09-15 and 2021-09-27), but both deposits are not in the assets in Metamask, but in Binance they are showing as complete. I hope that through this channel I can have a viable solution to this problem.

You sent a BNB successfully in the past? You see your BNB on bscscan.com pages?

Yes, I have done this operation before and I can see my BNB at bscscan

Actually it happened again when I made another withdrawal a few minutes ago. What is happening?

Yes, I have sent it previously and I can see my BNB in bscscan.
Actually it happened again when I made another withdrawal a few minutes ago. What is happening?

(Attachment export-0x8b013a1a610C2Ee3be785710e2500303b834e362.csv is missing)

Yes, I have sent it previously and I can see my BNB in bscscan.
Actually it happened again when I made another withdrawal a few minutes ago. What is happening?

Something strange here, I changed the Smart Chain Mainnet to Testnet and the BNB that was there is still there, but it is not the same amount as it was in the Smart Chain Mainnet. An adendum=> when I made the transactions, at first they appeared in Metamask and then disappeared soon after. Even the PVU that I had converted previously also disappeared. This is very strange.