an archive template for native WordPress posts well applied with conditions :
Archive
Post type: categories & tags
Archive terms : All terms (Tags) + All terms (Categories)
=> Commun – IMT
an archive template for CTP event posts not applied with conditions :
Archive
Post type: categories & tags
Archive terms : All terms (Event tags)
=> Live IMT Industrie – IMT
(the design should be the same as Commun – IMT)
My CPT is Projects - but these are the conditions for the two templates I use… One for Archives (for the posts), and one for ‘term archives’ (for the categories).
WP has a lot of ‘built in’ support for POSTS and Categories, which is not there for CPTs and Terms, so you must make it yourself. Also, you must explicitly tell WP to enable archives when you define the CPT and the taxonomy. So make sure you’ve done that too.