@leocg Well the yellow button happears with "installe" written(im in French so perhaps "installing" in english) and then after a few time the green button happears with "installed" written. And... i just noticed where it come from, i think this problem was due to the update of opera that i made, but after restarting my pc the problem is gone and i can install wallpapers normally and with no problems, so yeah i guess that this post was a bit useless, and i apologize for having unnecessarily monopolized the staff of Opera. I wish you a great day.

Hi, i recently come back to Opera (i was on chrome before) and so i wanted to change the background of new tabs, so i go to the "store" of Opera choose a wallpaper install it and... nothing happens, i remember that beore after he installation, it open a new tab with the wp you have just downloaded but here nothing, and the wp doesn't happears in my library. I don't know what to do. When i close the opera store page and open it again the wallpaper is marker as non-installed and the button "Add to Opera" is here. Anybody knows what can i do? Thanks

PS: excuse my english.