[נפתר] Site in staging (developpement) on Local by Flywheel, made with Elementor Pro - procedure to transla...

Background of the issue:
My site is in staging (development) on Local by Flywheel, made with Elementor Pro. I want to translate the site before publishing it on a public server.

Symptoms:
Not applicable

Questions:
How can I have the site translated by a professional translator who is not on the list (export xliff 1.2) before an export on a public server?
After translation, how can I import all the translated files and verify the result before exporting the site to a public server?
Thank you