So I logged in today after patching for patch 1.2.1 and was going to check my new weekly quests, as I wasn’t able to log in yesterday (2018-10-15), but I didn’t have any new weekly quests. It only tells me that I will have new weekly quests after 5 days.
I am sure that the previous quests were handed in in time as my friend handed in his quests at the same time as me and he got his new weekly quets.
Are you perhaps confusing Daily quests and Weekly quests? The weekly quests are for the bögenhafen DLC, which give you new costumes/hats and purple weapon skins.