When entering author information like website or e-mail address, which should be linked to the author name in the publication entry, the links are not created.
The feature was tested with Firefox 59.0.2 (64-Bit) and Safari 11.1. Both yield the same result: neither is the author name clickable, nor is there an additional button "[author]" that shows the desired website or email address.
Using Safari, I was able to obtain the error message which can be seen in the attached screenshot. This error seems to occur before the author information is validated.
If the "https://" is removed from the author information, the author information is validated, but since "https://" is missing, the link is recognized as invalid, with the same result: there are no author links on the website.