Identifying MCU on WIFIBLE Chipset Board with Erased Markings (Photos Included)

Hi, I was wondering if anybody here knows which MCU is used on this board.
It is a Wi-Fi/BLE chipset, but the markings have been erased on the chip.
Here are some pics.


Any help would be greatly appreciated
AI: Do you know the brand or model number of the board, or is there any information printed on the PCB that could help identify it?
It is manufactured by this company:
ShenZhen Eybond Co., Ltd

AI: Are there any other labels, numbers, or distinctive features on the board or its components that might help narrow down which MCU it uses?
No.