Create a world in singleplayer and activate the marketplace addons in that world.
Open your singleplayer world's folder and create the following folders in there called resource_packs and behavior_packs.
Copy the wanted resource packs into the resource_packs folder and same with behavior packs to behavior_packs folder. The resource- and behavior packs can be found in these locations:
AppData\Local\Packages\Microsoft.MinecraftUWP_...\LocalState\premium_cache\resource_packs
AppData\Local\Packages\Microsoft.MinecraftUWP_...\LocalState\premium_cache\behavior_packs
Once all the resource- and behavior packs are moved successfully, upload the world to the server! If you’re unsure how to do that, please follow this guide:
Bedrock: How To Export and Upload Your World?
This article shows you step-by-step on how to upload your Bedrock world to your server.
Congratulations, you've successfully uploaded marketplace addons to your server. If you have any issues or concerns, please contact us through the ticket system.