Ivip Black App Store Exclusive
Apple began revoking Enterprise certificates aggressively in 2019 and 2020. Consequently, IVIP Black and similar stores pivoted. They now often utilize standard Apple Developer Certificates. Because Apple limits these to 7 days (for free accounts) or 1 year (for paid accounts), the apps often require re-signing or re-installation frequently.
If you're looking for alternative app stores, some popular options include: ivip black app store