Hi,
Sorry for late delay, this is a part-time project for the moment.
When searching options to add specific post type to be searchable, I found this option:
https://wpdynamic.com/wordpress-developer/wordpress-code-snippets/how-to-include-specific-custom-post-types-in-wordpress-search-results/
But I’m not sure how to define the store slug (from the database), to make stores searchable, but not allowing a customer user.
Thanks!
Found the problem.
I had in textboxes choice options a “/”. Just removed it and error disappear! I supposed it was read as RegEx instruction.
ref.: https://wpml.org/forums/topic/profile-fields-translation/
There’s the theme used http://themeforest.net/item/energy-responsive-multipurpose-theme/4839446
Support told me it could be related to multi-sites install, on single wp all seem to work well.