I may be misunderstanding you, but the yellow gloflies that appear that required Stitched Sheets and such is the intended second upgrade.
Do you have a campfire at your tent? If you have that, then you should be fine and where you need to be.
I have the campfire yes, but the second camp upgrade never appeared for me and now only the third upgrade is shown. (which is quite impossible to get with just 20 storage)
Upon doing a new game and not rushing the locales and making sure the 2nd camp got build I am now stuck with the first merchant spawn trying to build the blackboard. What I can note though is that when I didn't have the camp upgrade the same sound for the first day happened with the merchant not showing. Though I wasn't soft locked and could just go to sleep. Two days later the merchant showed up and I assume the sequence of them explaining the blackboard played (which should have happened the first time)
I assume the bug that I couldn't build the camp upgrade comes from that interaction as well.
Here a quick screen showing what I mean:
https://postimg.cc/v18rd5LF
Thank you for the report and the screenshot, sorry for second-guessing you but it's hard to be certain without seeing folks screens.
We'll do our best to look into a way to solve your previous issue. The current one is known to us and yeah, the sequence sorta fixes itself in time but we're working on a hotfix to make it work again retroactively!
Thank you again for this!