My situation is the same as yours, I can only register the card data to the server.db file by logging into the local server, and I can also modify the card data through the browser, when I try to read the card data in the game, there is a “communication error”. However, I use radmin vpn to join a game group, I can use the group server to read the card data normally, and I can also save progress and modify the card data.
In some groups, some people said that this local server program is modified from xboot server program.