Asset library not working

  1. D5 in 2.6.x shows only Failed to fetch data, with no assets available for use.
  2. D5 in 2.4. shows all assets, but most of them can not be assigned or used.

Obviously this makes D5 an unusable product and begging for customer service in a forum is not exactly usable customer support. Please reach out to me with solutions to both of these problems.