Some quest (like the Construct the Godswood) wont have a quest itself. You only have to do what it says: Construct the godswood. If you’ve already done that, maybe you can try cleaning history, cache, cookies from your browser and loggin again.
It happens to me sometime when I just have the bonus quest (in your case, “Ursa Serene”) I clean everything and I log again. The next story quest appear. Sometimes I do not need to do that, it just appears within a matters of minutes while I do other things like sending swords on adventures and such.
What calls my attention is that you are on chapter 3 of Vol 1 and you have the Cycle of Rebirth. It should not appear until you finish Vol 1.
Nevertheless, you can follow through the quest itself to make it go away.
In the second part of the quest (where you are) choose the option where you actually want to reincarnaite.
This would not make you born again inmediately, but it will pop up a windows telling what reincarnaite means (That you will lose everything excep for the items mark as permanents among other things). At this point it will ask you again.. Are you sure?
There you hit “Cancel” and the quest will disappear.
From there, you can reincarnaite at any moment through to the character sheet on the tab where you can see your character history.
If you still have doubts about this, we can make a step-through for that quest.
Post captures every time you are not sure and I will guide you. =)