Found the solution!
I am looking at caches that have descriptions, which I select at geocaching.com when I'm still at home.
When I open Cachly and tap the Basic version button, I don't get the option to hit ok, just cancel or continue. I thought that when I hit continue, it meant that I would proceed to become a premium member. Apparantly that was not the case but the opportunity to get the description!
Now looking forward again to go caching with Cachly! Thanks for helping me to find the answer to my question!
PS: Is it necessary to put this obstacle at this place in the app? I understand that you're trying to make people aware of the advances of being a premium member, but I almost quit using the app, because I thought I didn't get what was promised. Maybe you can introduce the announcement when people reach the 3rd cache of the day?
Wish you all the best and thanks for having made this app!