First off, let me say I really enjoy the quirkiness of this game, it is so fun!
However, I think I have run into an issue.
I first discovered Planet Life the other week on coolmathgames. Prompted me to finally make an account there after a few years. I was tired of losing progress on games. (Well it turns out I misunderstood what exactly was saved there.) And long story short, I lost progress there again (entirely my fault. And I see from the comment section here that the export function was glitchy there even when it was an option.)
So I searched to see where the game was available elsewhere. I was pleased to see all the options! ^_^
So following the advice you gave here, I clicked the link and it took me to planetlife.space . I noticed in the beginning of the game that the dialogue seemed a tiny bit different. Interesting, I liked the original quirkyness too. But then I started noticing no treasure chests in the dungeons. Even though the bit here on itch is saying it's the updated version, I quickly began to come to the conclusion that it's in fact an earlier version. (I restarted/reloaded it just to test it.)
So, off to try christianlaumark.dk/PlanetLife/ by pasting it into the address bar, and start the game for a fourth time. And voila, updated version with export and import functionality.
It's neat being able to see the game in its earlier form, and the .space is a neat address, but I don't know if you want to edit the links, or switch the coding, but I thought I'd give you a heads up that was happening in case you didn't know.
By the way, I really appreciate you shrinking the game display later on to fit to screen! Less scrolling is much appreciated.
Thank you very much for making such a fun game and sharing it!
Sincerely, Winter