PubHTML5 provides free version and purchased versions to meet your different needs. Simple steps you can downgrade your PubHTML5 account and then subscribe for other packages.
Step1. Click “Billing”-“Cancel Renting”.
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Step2. After you choosing one reason for cancelling and confirming your password, just click the button “Cancel Renting”, it will jump to your PayPal page, then you could confirmed the cancellation.
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Step3. In this case, you can subscribe to other packages to meet your needs and make your publications perfectly. But you don’t need to do anything if you want to be a free user.