The program was easy to use for our team at work with its intuitive layout that made it simple enough even when we were new users! I also appreciated how they kept adding features over time which helped us stay ahead as an agency/brand compared other programs out there like ShareASale or LeadPages who had less options than them but charged higher rates per month (or year).
For now i would say their customer support could be better though not bad either considering this platform has been around since 2005-ish so maybe thats just my own experience? We used impact primarily because most agencies offer affiliate marketing services where you can promote products through links from your website - hence why leadpages wasn't good fit anymore given what kind of traffic those pages get vs link building campaigns via adsense etc..