Hello
I had a problem with the component AdsManager.
upon insertion of a new ad, you do not open the form for data entry to post to. I turned off the
component JoomSEF, and the problem is gone.
what do I configure JoomSEF on to solve this problem?

Greetings

Hello,

what Joomla version do you run? Probably there is a problem caused by incompatibility, so you need JoomSEF AdsManager extension to JoomSEF works correctly with AdsManager.
Please, check requested extension: www.artio.net/joomsef/extensions
If you run newer Joomla than I only can recommend you to switch off SEF URL for AdsManager in JoomSEF´s Manage Extension.