Hello, I am having major technical issues with the Lightroom app. It constantly crashes and does not work at all. Since the app is unusable, I would like to request a full refund for my recent charge. Please help me process this refund. Thank you. >

See here:

https://helpx.adobe.com/manage-account/using/creative-cloud-subscription-terms.html

and here:

https://helpx.adobe.com/manage-account/using/cancel-subscription.html

You need to have a valid form of payment before you can cancel a subscription and get a refund.

https://helpx.adobe.com/account/individual/billing-and-payments/payment-methods/update-payment-information.html

post this in the lr forum, https://community.adobe.com/lightroom-ecosystem-cloud-based-677

and change your title slightly to avoid a duplicate post error.