i just wanted to insert a new ad for a friendly, but i couldn't! then, i saw that there is still the ad from 27th, on the date of which i played a friendly.
does someone know how to delete the old one or what else to do?
As far as I know, there's no way to delete an ad. You just have to wait until it expires. In the mean time, send out as many challenges as you can and hope that someone accepts.