how can i buy more storage? tried payflow, does take me past here

In warpcast settings page (gear icon) -> storage -> buy more storage is another way I think

If you don’t pay for the 1 year subscription, Can you access your account using another cast app?

Normalize praying in the morning before you touch your phone.

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Yes you can.. warpcast is a client, same with supercast and recast. They wouldn't just share the same features

I’m not talking about the storage payment part, 

I’m talking about when you start Warpcast app
It will tell you to pay $5 for a year

If your Warpcast yearly payment expires and then you don’t pay the Warpcast $5/year, can you continue to use app like Recaster, to access your account ?