[ Question ] About Open Port and Tor Gateway.

I was not able to open port, may be that's because of my ISP, I see on HelloZeroNet page that,
> Your port xxxxx is closed, but your Tor gateway is running well.

I see the above message, so if I had a site on ZeroNet, am I considered as a seeder to my site, if I was the only seeder to my site, assuming it is a new site. is it enough that tor gateway is running but without open port ?