I'm facing some similar issues with my Paypal checkout - connected to my store.
On the "complete payment" page of the checkout screen its showing that "PayPal checkout for this store is currently experiencing problems. Please try another payment method." - when I'm pressing the "Complete order" button. FYI - my Paypal account is already connected to the store!
I'm attaching a screenshot for your clearance - please have a look, & help me out
I've just moved your question to a new topic since the previous thread was regarding not being able to connect PayPal to Shopify.
PayPal checkout for this store is currently experiencing problems. Please try another payment method.
An error message like this might come up if you are testing the checkout through your theme editor (under Online Store > Themes > Customize in the admin) rather than on the storefront. If you are going through the checkout process on the storefront the same way that a customer would, here are some troubleshooting steps you can try to resolve the error:
Since PayPal is a third-party payment provider, I recommend contacting PayPal support if the issue persists across more than one browser or device and after deactivating and reactivating.
Connect your PayPal account to allow your customers to checkout using the PayPal gateway a...By Ollie Jul 28, 2022