"PayPal wasn't available, choose another payment option or try again later."

[Heinrich]

My checkout doesn't work because of this error, please assist ASAP!

[Daniel]

Hi there, @Heinrich! 

Welcome to the Community! Definitely a great place to gather some input regarding anything about the platform!

With regards to your inquiry, I recommend you reach out to our live support team right away given that this involves your checkout and may be affecting your sales. The sooner we can resolve the matter, the better and our live team is able to open up back end information that we do not have access over social channels. 

However, if you prefer to further discuss the matter here, I am more than happy to dissect this further with you. I have attached this help document that walks you through the PayPal set up in your store. 

I look forward to hearing more from you about this matter.