Valheim - can't get my world turned into a dedicated server, please help I've tried for a week

[mild hull]

I've downloaded gportal, got a server. Downloaded thunderstore, opened it in modded mod. Tried transfering saves using FileZilla to make it work. Cant tell you how many videos ive watch. My friends have been waiting for a week for me to figure it out. Please, Im begging for help at this point

[tropic rover]

<@&1339550644054392884>

[rain patrol]

Hello, sorry that I can't help, I have never used Thunderstore before, I heard from it yesterday the first time.
Please contact the support
https://www.g-portal.com/en/support