"Forstar FT10A firmware download" or "FT10A stock ROM".Many budget tablets come with pre-installed bloatware. Some aggressive malware may require a full firmware reinstall.
Open the back cover (carefully with a plastic tool) and look for a sticker or silk-screened text: forstar tablet ft10a software link download best
Match your software download to that exact PCB version. Search: "Forstar FT10A firmware download" or "FT10A stock
If you cannot access your device, the only solution is often to flash the stock firmware, wiping all security. Many budget tablets come with pre-installed bloatware