Start with the console.

The server stops right after start

Usually java.lang.OutOfMemoryError or a JVM exit with no message. On 1.5 GB there is very little headroom — a modpack plus a view distance of 12 will do it every time.

• Lower view-distance to 6 and simulation-distance to 4.
• Remove or trim datapacks and plugins you aren't using.
• Don't raise the memory flags above what the panel allocates; the process gets killed.

"Unsupported class file major version"

The server jar and the Java runtime don't match. Newer Minecraft versions need a newer Java. In the panel's startup tab, pick a runtime that matches your server version — then start the server once without any custom flags to see whether it comes up.

Can't connect, but the panel says online

• Wait for Done ( in the console — "online" in the panel only means the container is running.
• Check the port: Bedrock needs address and port, unlike Java.
• If you changed server-port manually, revert it; the panel assigns the port.
• Client and server versions must match on Java.

The world is gone after a reinstall

Reinstalling an edition replaces the server directory. Backups are not deleted, so open the backup tab and restore the most recent one — then download a copy before trying again.

Still stuck?

Email hello@suckshosting.example. One person reads it; expect a reply within a couple of days, not minutes. For account or security issues, see security.

The full reference is in the docs — including limits, loaders and backups.