If your prints have wrong color, you can try these suggestions: Make sure the Black/Grayscale or Grayscale setting isn't selected in the printer software. Conduct a nozzle test to determine whether any print head nozzles have become blocked.  Try using the color control options within the software for printing. If you have any problems, please contact us at hp printer printing wrong colors.

Thanks for the recommendation, but I have already found a printing house where I can order printing. For example, https://urbansignandprint.com/collections/trade-show-displays. They print signs, banners, business cards, and everything you need for exhibition stands. You can see the prices and services on the website!