Hello,
Your DB schema looks good – it is upgraded to the latest version. The symbol column in particular allows for symbols with a length of 8 characters.
It might be a good idea to check your debug log for errors as mentioned before. For instructions, please have a look here: https://codex.wordpress.org/Debugging_in_WordPress
Please let me know if you see any errors written to the logs, especially at the time when you visit https://scoobycoin.com/my-account/?__wallets_apiversion=2&__wallets_action=get_coins_info
kind regards