29.06 15:30:05 [Server] Server thread/INFO [dynmap] Enabling dynmap v3.1-beta-1-367
29.06 15:30:05 [Server] Server thread/INFO [dynmap] Added 4 custom biome mappings
29.06 15:30:05 [Server] Server thread/INFO [dynmap] Using Bukkit Permissions (superperms) for access control
29.06 15:30:05 [Server] Server thread/INFO [dynmap] Web interface permissions only available for online users
29.06 15:30:06 [Server] Server thread/ERROR [dynmap] Error reading plugins/dynmap/markers.yml
29.06 15:30:06 [Server] Server thread/INFO [dynmap] Extracted files upgraded
29.06 15:30:06 [Server] Server thread/INFO [dynmap] Mod Support processing completed
29.06 15:30:06 [Server] Server thread/INFO [dynmap] Loaded 25 shaders.
29.06 15:30:06 [Server] Server thread/INFO [dynmap] Loaded 82 perspectives.
29.06 15:30:06 [Server] Server thread/INFO [dynmap] Loaded 22 lightings.
29.06 15:30:06 [Server] Server thread/INFO [dynmap] Starting enter/exit processing
29.06 15:30:06 [Server] Dynmap Render Thread/INFO [dynmap] Finish marker initialization
29.06 15:30:07 [Server] Server thread/INFO [dynmap] Web server started on address a090m.virtushost.net:8123
29.06 15:30:07 [Server] Server thread/INFO [dynmap] version 3.1-beta-1-367 is enabled - core version 3.1-beta-1-367
29.06 15:30:07 [Server] Server thread/INFO [dynmap] For support, visit https://reddit.com/r/Dynmap or our Discord at https://discord.gg/s3rd5qn
29.06 15:30:07 [Server] Server thread/INFO [dynmap] To report or track bugs, visit https://github.com/webbukkit/dynmap/issues
29.06 15:30:07 [Server] Server thread/INFO [dynmap] If you'd like to donate, please visit https://www.patreon.com/dynmap or https://ko-fi.com/michaelprimm
29.06 15:30:07 [Server] Server thread/INFO [dynmap] Loaded 3 maps of world 'NEC'.
29.06 15:30:07 [Server] Server thread/INFO [dynmap] Loaded 2 maps of world 'NEC_nether'.
29.06 15:30:07 [Server] Server thread/INFO [dynmap] Loaded 2 maps of world 'NEC_the_end'.
29.06 15:30:07 [Server] Server thread/INFO [dynmap] Enabled

so i send a message about the ports to my host, and they call me that:

"In Multicraft hosting, as ips are shared, a single port is released for hosting on the Minecraft server (xxxxx).
To use other ports as well, it is only possible in dedicated hosting, which has a dedicated IP for each hosting."

Do I really need to pay for a dedicated server to use dynmap? Or is there a way around this problem of ports?

they said that i have just one port... To get more ports i need to pay for a better server...

I

they said that i have just one port... To get more ports i need to pay for a better server...

If this is the case, there is no way to resolve it using your (dubious) hosting service.

You dont need to do that, most hosts allow you to add extra ports and you can configure the dynmap to run on those. In this case I could visit the dynmap just fine. Case can be closed.