I tried it for a few different prepubs, although the main one I am interested in is https://www.logos.com/cart/prepub/checkout/309393
I seem to be getting 500: Internal Server errors.
Same problem here...
Faithlife is aware of the problem.
Lynden Williams Communications
This has been fixed. Sorry for the trouble, and thanks for the report.
Thank you! Yes the prepub order just went through fine.