Player Data got lost when move from local to Aternos

Hello guys, i'm playing minecraft with my friends through Radmin VPN but we have some issue with time. I am the host and we only can play whenever I play, so that I decided to upload my world to Aternos. But when I'm start my server, the world is the same as my old world but I don't have any thing in my inventory and spawned at the world spawn point. How can I get my stuff back for me and my friends because it will take a lot of time to move all the stuff of all ?

We are playing at Minecraft 1.18

Thanks a lot

Edit 1: My friend doesn't lose his stuff, but mine stuff are gone.