Worth splitting this in two, because the parts fail differently.
The verification prompt is mostly a signup artefact: card country against IP country, the same payment method behind several accounts, a datacenter address, a browser that looks identical every time. The suggestion to compare flagged accounts against clean ones is the right way to find which one is yours.
The part that doesn't get fixed is the funding trail. Cheap subscription accounts bought in volume are almost always paid for through a handful of cards or wallets, and that link outlives everything else you clean up. When one account gets reviewed the rest tend to go with it, so the batch dies together instead of one at a time. That's why volume here looks cheap and ends up expensive.
If the reason for many accounts is limits rather than price, a higher tier or API access gets you there without the exposure.
Best,
Floqal
