Unable to Connect to any of the specified MYSQL Host

[NP]

Hi,

I have established a connection between AppSheet and the MySQL database by providing the necessary database connection information. The app loads successfully; however, modifications made in the app do not sync, and an error is encountered (Unable to fetch app definition. Error: Data table 'table1' is not accessible due to: Unable to connect to any of the specified MySQL hosts.. Error: Data table 'lookup' is not accessible due to: Unable to connect to any of the specified MySQL hosts.. Error: Data table 'lookup' is not accessible due to: Unable to connect to any of the specified MySQL hosts..).

Could you please provide assistance with resolving this issue?

[WillowMobileSys]

You typically need to to whitelist all of the AppSheet servers in the database host server.  Did you do that part?    You can get more details here