I cant bring the twig and bine item home, it should ask a gold bar to pay if i bring and I don't have..

Its actually reached the limit or qouta of the day so you should try and go to Farstar City instead to get twigs but Farstar is a dangerous so be careful there. If you dont want to lose the twigs you can just put it in the storage part (under the mailing bar om the postman?) and keep it there. Send them when the daily reset.