Hi, thanks for the question. As I wrote above, it should have disappeared once the event was over if you didn't reach the milestone. I'll let the team know and it should be gone in a few days.
Sunken kingdom: I only got to level 5 with the castle only because my Troll camp stopped dropping the twine when I had just 3 more deep sea shirts to make and 3 days to go - I was only getting 1 with every two or three collections. Very annoying! And now that part of the event is over I had the quest pop up to Welcome Queen Samera by collecting more deep sea spears. How can I do this when the level 5 castle no longer drops spears? I had earned enough to collect the community prise of 50 energy.
Normally the Goals from past events disappear, but there seems to be a small bug.
Checking out the forum at the start of/ during any event can really help. Lots of tips and such.
For example, in this event you could do the 2 Hour Toadstool Forest Adventure and get event drops (including the Troll Camp drop if you were lucky)
The Adventure was cheap and short and could have really helped you out with those last 3 Twines.
I'm sorry you missed out on Queen Samera
Thanks, it was just weird how that didn’t pop in the quest until it was finished. I will check in here more often.