Hello @BerniceS546 ,
While it can be reused later (copying the URL from the email's reporting page) and turned off, at this time the donation block is permanent once an email is no longer editable (i.e. sent out). This was implemented before the newer lead-gen landing pages and shoppable landing pages were released, so our engineers are looking into ways to make the current donation block / landing page system better, including being able to edit it at a later date and time that wouldn't interfere with the payment collection.
I've tracked the relevant feature request for our engineers to review, and submitted it to their queue. If and when such an update to the donation block is implemented, they'll make sure to notify you. In the meantime, you could potentially use the shoppable landing pages or use a 3rd party's payment / donation system to generate links to insert into your emails.
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