Found a way to preview the Excel content and this is the first entry:
Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 20480 bytes) in /ww/htdocs/…..
This happens even if I just try to get a table of the downloads of one day which are just about 2.000. If I change the days or weeks the allowed memory size is still the same. It seem it tries to get all the entries first and then delete the ones not needed?
How can I get just the table for the week/month?