WPML - jm-ajax link and post translation 404 issues

#### Steps to Reproduce
Job listings page:
Include [jobs] shortcode on page and translate.

Job page:
Set job_listing settings as "appear as translated" in WPML config.

#### What I Expected
Job Listings page:
Would load jobs as list.

Job page:
Page loads "as translated", so that strings are translated but page content is not.

#### What Happened Instead
Job Listings page:
Failed to load jobs because of an AJAX error, as the link requested does not exist.

Job page:
Returns 404 when switching to secondary language

#### WordPress / WP Job Manager Version
WordPress: 4.9.5
WP Job Manager: 1.30.2
WPML: 3.9.1

#### Screenshot / Video

Job listing page AJAX error

404 page of job listing in secondary language

Start by reproducing the translated [jobs] shortcode page and the job page configured as “appear as translated” in WPML. Trace the missing AJAX link and the secondary-language 404 using the reported WordPress, WP Job Manager, and WPML versions. Done means translated listings load and the secondary-language job page returns the translated strings without a 404.

Written by the indexing model from the issue text.