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About the issue where orders and more things don't appear;
MySQL 5.7 and above, "SQL MODE " Definitions, some commands to prevent the operation of the software is found. These should be removed from the SQL MODE definition and updated as follows.
For the solution;
1) Open the /etc/my.cnf file by accessing your server as root via SSH or SFTP. (If you do not have root access, you must provide this process to your server company.)
2) at the bottom of the opened file, add and save the sql_mode = NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTIONdefinition.
3) Restart your MySQL server.
If you need more information, please let us know.