fix: release 3.0.0 testing issues

Description

• Remove the host parameter from the server configuration since it is always runs inside a Docker container
• Describe the meaning of empty verificationToken in configs

Related issue

#309 (closed)

Examples

Checklist

• the MR description has been reviewed
• this MR contains text changes and they have been reviewed OR there are no texts changes
• this MR contains GUI/CLI changes and they have been reviewed OR there are no GUI/CLI changes
• this MR contains API changes, specifications reflect those changes and they have been reviewed OR there are no API changes

Closes #309 (closed)