I can only see one upgrade "Pack" offer

Thanks for the response SalixCat. Here are the answers you asked for, with some screenshots and an update of my problem.

- I'm using a Google Pixel 4xl.
- I'm at Level 33 in the game, but I'm at level 3.3 in my Eco Workshop.
- I am not having a problem with the blue circle with numbers indicating that I have heirlooms to collect, which you highlighted in the red boxes in your response.
- My question is about the blue circle with the number 4 in the top left corner of my screen. It's usually next to an image of SimCash and a cupcake, but sometimes (like now) it's next to an image of a big yellow explanation point (!).
- I assumed the number 4 indicates how many packs I can buy, but maybe it means something else. I have no way of knowing since I can only ever see one "Featured" offer at a time since I started playing the game two months ago. 
- For a long time, the only offer available to me was the Raise the Roof Architect Pack for $69.99 which I'm not interested in buying. After the Eco Workshop opened, my only offer available was the Eco Workshop Starter Pack for $6.99
- Yesterday I decided to purchase that starter pack. My only available offer then was Eco Workshop Upgrade 1 for $3.99 which I also bought.
- The game went back to only offering me the Raise the Roof pack. Coincidentally, when I started the game this morning, I momentarily could buy the Eco Workshop Upgrade 3 for $27.99, but now it's back to Raise the Roof.
- If I wanted to buy the Eco Workshop Upgrade 2, I can't because it was never available to me. If I want to buy the Upgrade 3 right now, I can't because Raise the Roof is my only option.