daily quests bugged

Hi, Ive been on the server for a few months and I keep having troubles with completing daily quests. I can take them, however when I, for example, kill the mob it doesnt count, quests items don't drop or I simply cannot even start the task as if I didn't have the quest taken. It happens on both of my characters and it's pretty annoying. Sometimes when i reload and relog for 20 times, or when my character feels like it , it works :D but I don't really have patience for that. I could've done 20 dailies per day in a few hours and instead I'm stuck with retaking/relogging/reloading the account. Is there any way to fix that? Thanks a lot.

It sounds like you are in raid group, can you queue rdf alone or invite other players if you can't write this in chat "/script LeaveParty()" if you can invite someone to party and convert it to raid then write it again "/script LeaveParty()"