After upgrade wordpress to version 5.2.3, from version 5.0.3 and upgrade ajax search pro to version Versión 4.16.3. the engine search setting Frontend Search Setting \ Custom Fields\ User meta (field) Type Hidden… is not working any more… the result is not filtering.
We have a develpment site same setting identical search engine setting, but different wordpress version working 100%. Already test , install and uninstall the plugging, export/import definition of the search engine, clear cache, etc… Nothing look to work.
Please advice how to proceed