I would encourage those who are having difficulties to explore why before requesting that the entire system be scrapped.  The new digest works perfectly for me.  I get a list of all the messages, and the content is below. The format is much easier to read than the old plain text.  If the messages are not opening for you, it may be, as someone else suggested, a setting in your e-mail client that is causing the problem.

If you are reporting problems with the system, include the name of your e-mail client and the name of your operating system in your message.  For instance, write that you're using Outlook on Windows 10 or Roundcube on Mac OS and whether you are using a PC or a mobile device.  That provides useful information to the administrators. It is probably much more productive to send that information to support@... than to post it here.

Toby