The next Lemmy version will add a donation dialog, which is shown once a year to every user, in order to increase the amount of donations for Lemmy development. You can see the current text in the screenshot above and in the translations repo. You can also checkout the frontend PR. Is there anything you would change about the text?
Edit: This is how the final design looks like:
It seems difficult to explain these in such a short text. However I will make a similar post soon to improve the donation page on join-lemmy.org, maybe it could be included there as it has more space available.