If you're moving from Taboola, MGID and MediaGo are definitely more lenient, but Chargeback/Recovery is still considered a high-risk vertical on almost all native networks.
Here's what you need to know about both:
MGID: Their moderation is way more flexible than Taboola's, but they will still manually review your landing pages. To run a recovery offer here, your safe page needs to look like a legitimate financial blog or consumer advice article. Once approved, you'll need to use a clean cloaking setup to direct the actual high-risk traffic to your money page. Be prepared for a higher volume of bot traffic compared to Taboola; you'll need to aggressively blacklist poor-performing publisher IDs early on.
MediaGo: They have great traffic quality (especially in MSN placements), but they are heavily backed by Baidu's tech, making their compliance rules automated and sometimes unpredictable. They are strict on 'claims' made in your ad copy, so keep your headlines extremely clean (e.g., 'Understand Your Consumer Rights After a Scam') rather than aggressive promises of 'getting your money back.'
Regardless of which one you choose, do not send traffic directly to a hard-pitch recovery landing page. Use a pre-lander (advertorial style) to warm up the audience and pass moderation safely.