Help me please! I have a big problem! -_-"

Hi!
I have an assasin character (lvl 81) and I can't use my daggers which ones I bought from the weapon dealer and which have level limit 80 (Zin Dolche & Aqua Messer). I really don't understand why and I want to use them because they have damage...Instead I can use my dagger Seelenloses Messer which is for 80 lvl too. The only difference is that I made it myself from a dagger for level 65 and I don't want to use it because it hasn't damage.
I wait for a reply please! ^^

And another problem which is not so important but...I'm playing on this server just since the beggining of the week and I have the playtime 145000 minutes which is not normal (I didn't play so much time. It's more than one of my friends playtime who plays since last month!)

Seeing these two issues...do you think it's about a character with bugs? Can you help me or I have to create another account?

Thank you for the support!

ok as far as I know the daggers are for lvl 90+
and about the playtime - its a bug. I have it on one of my chars too

OMG I didn't know the fact that the daggers are for lvl 90 if they are +9 )
I thought it's a problem =P
Thx anyway! ^^

but still I am not sure