1st gear ticked

Hello. Drive a C30 1.6D year of construction 207 (model 2008). Now I have for a long time the feeling that the circuit is rather tacky. The last days it was very cold in the morning (about minus 6 degrees). I started the car and wanted to switch to the 2nd course. The 1st course went out quite hard and on the way to the 2nd course (still before the empty up) the circuit remained hanging and the gears gnawed – unpleasant noise. The gear barely went out. Somehow it went and I could again A few days later, the same thing happened to me again. What can it be? Is that because of the temperature or is there something over the gearbox. When it is warm, I don’t notice any big switching problems, although I find it is very hard. I’ve been to Volvo Krull several times, but they said it’s all right. Half a year ago, the switching cables were supposedly set, because I had a vibration in the circuit at about 100 km/h in the 3rd gear – which actually also w eg. KM-Stand: ca. 58.ooo km Thank you for your help.