I noticed that other “subs” from blendit.bsd.cafe have actually a nice and good looking banner while our looks unfinished, there is a problem with the transparent background apparently. JPEG doesn’t play well with transparency.
So just in case I made the same banner but in SVG (which keeps the quality picture what ever the resolution) and changed black letters for red to make them readable even on dark theme.
Hope that can help a bit the admin to solve the issue we have here.
Thank you.

preview:
https://ibb.co/C2vMfWL
banner in svg:
https://lufi.ethibox.fr/r/PTxud1VJWw#OkytHyxzf5XdeLenuk8RO3yUQEjwgTnVFxkki1o6TcE=