blacklist on my account
My guess is you hit DR (Diminishing Returns). If you stay in one area long enough, your rewards are cut back. Wiki says it cuts in after 3 hours in one area.
http://wiki.guildwars2.com/wiki/Diminishing_returns
What you need to do is go to another area for a while and play there. Do an event or two then you should be able to go back.
(edited by Astral Projections.7320)
how can I level up to 80 with limitation?
There are many maps for each level, and with the automatic down-leveling the list of available zones increases as a character levels up. Throw in gathering XP and exploration XP and leveling up is a speedy and unstoppable process.
My favorite leveling activity is the zone “wall crawl”. Hug one side of a zone and explore every cranny. You’ll find hidden chests, veterans, jumping puzzles, loot, gathering, sights, and usually a few levels.
Exploring cities are worth some levels. Crafting can be worth several levels. The dailies are worth quite a bit of XP, and your Personal Story rewards a good amount of XP. There are many fun and interesting ways to level up besides doing the same event over and over. Good luck. =)
The way this game is designed, you can level in the noob area. When I was level 78 on my thief I took her to the level 5 Norn area and ran her through the events there and got her to 80. I took her there because the events cycle fast, almost one right after another, so you get a lot of exp in a fairly short amount of time. It’s a little boring, but quick.