Okay, about prospeo: it's mainly returning "Bad Request" but that's because prospeo is unable to access/find the site's MX records. We probably have to update the messaging there. Icypeas though, I'll check with the team.
The team did say it's expected with the current setup but we were given some updates from the Icypeas team that will help speed it up soon. They'll be working on this. For now, I'd just let the integration finish what it can and then queue up those that didn't complete and don't have emails.
Hi Ben H.! Clay's team has pushed a modification. It seems that the time-out issue is fixed now. I invite you to relaunch your enrichment with Icypeas.