How to set database connection when host denies access from outside?

I’m ready to publish my website onto my server. The problem is, my hosting provider doesn’t allow access to the database from outside the server environment (security reasons). Basically, no problem since the website runs on the same server. But Wappler doesn’t save a database connection when the connection is not tested before. So I can’t save my database connection since it’s a connection timeout.

If there is no Wappler way, I’m gonna try to set a static IP on the server to enable access:
https://w4yfaq.world4you.com/en/webhosting/faq.pc-mysql-datenbank.html