http://stvs6p7i2jnwrwxx3dtdcgjpjsiuttvjk6mjxbealjcjx4paznnopxad.onion/knowledge/import-sql-file-to-your-onion-service
Scroll to the "phpMyAdmin Credential", you will see your phpMyAdmin info and its credential. In the "phpMyAdmin Service" section, copy the phpMyAdmin link, and paste to the Tor Browser. The authentication dialog is shown, you should input the "phpMyAdmin" credential, which is displayed on our Customer Portal, in the "phpMyAdmin Credential" section.