What is up Kizuya and a big welcome to the forum! <3
Glad to hear you've already read the rules! That's an awesome step in the right direction. I used to ignore rules at one point years ago but after noticing that this forum in particular has some rules I wouldn't have known about otherwise, like no bumping threads if they haven't had a post for 30+ days, began to read through to understand everything, baha.
Great to hear that you're so into Pokemon too. n~n A lot of us here are very big fans and welcome any new member who adores the franchise as much as us! Whether you're into the games, anime, manga, or cards, you'll have a place here and meet many people who are itching to get to know you. You're going to fit in excellently already since you share your love of Pokemon in common with us.. though I wouldn't say your Pokemon are the weakest of them all. I'm sure they're lots better than you think. Some games have almost no good training spots (lookin' at you, HeartGold and SoulSilver) so getting them up in levels is tough, but you'll get there. Just keep on playing and discussing your favorites here.
As for your signature issue, it'll only show in the posts where you have a signature for it to update. So your first few posts didn't have a signature at all, right? That's why they're not showing in those particular posts - it's not set to display a signature because there wasn't one at the time of your posting. You can fix that by editing your post, clicking "Go Advanced", and from there you can tick the "show signature" box. Or just make another post! Since you now have a signature it'll be underneath your posts from now on. Make sure you have signatures set to show in the edit options bit in the user control panel, too! Good luck and wonderful meeting you! Be sure to let me or another staff member know if you need more help.