Google Maps API Setup for (WP Job Manager Geolocation

I run three WordPress job-board websites that use WP Job Manager and the WP Job Manager Geolocation add-on to display job listings on Google Maps:

https://www.ecologyjobs.co.uk/
https://www.sustainabilityjobs.co.uk/
https://www.conservation-careers.com/

Recently the maps stopped displaying and new job listings are no longer being georeferenced. This issue occurred because the original developer set up the Google Maps APIs using their own Google account and billing card, which has since been removed.

I am now looking for an experienced developer to correctly set up and connect new Google Maps API keys using my own Google account and billing details, and ensure everything is working securely across all three sites.

What I Need
1. Google Maps API Setup

Guidance on securely granting you access to set up the APIs without sharing my Google account login.
Examples might include: temporary collaborator access, screen-sharing, or step-by-step guidance while you work on integration.
Create both server-side and browser-side API keys as required by WP Job Manager Geolocation.
This is documented here - https://docs.geomywp.com/article/141-generate-and-setup-google-maps-api-keys
Ensure billing is active on the correct card within my Google Cloud account.
Liase with plugin support as needed if issues arise.

2. Integration with WordPress

Add and configure the new API keys for each of the three sites.
Confirm that Google Maps displays correctly on job listing pages and search maps.
Ensure new job submissions automatically georeference and appear on the maps.
Test functionality on all three installations and verify everything is working as expected.

3. Troubleshooting and Verification

Identify and resolve any errors or conflicts arising from the previous API configuration.
Confirm there are no leftover settings pointing to the previous developer’s account.
Provide a short summary of what changes were made and any future maintenance tips.

Who I’m Looking For
Strong experience with Google Maps API, WP Job Manager, and related geolocation plugins.
Ability to work securely without needing direct access to sensitive Google logins.
Clear communicator who can document steps taken.
Ideally, someone who has solved similar issues for WordPress job boards.
Communication through WhatsApp for speed

Deliverables
New Google Maps API keys created within my Google account.
All necessary APIs enabled and billing confirmed.
Maps displaying correctly on all three sites.
New job listings geolocating automatically.

Access & Security
It is essential that everything is set up using my own Google account and billing details.
I do not want to share my personal login credentials.
I am happy to provide access in a secure manner, such as:
Adding you as a temporary Google Cloud project collaborator
Completing account-level steps myself while you guide me
Screen-sharing during sensitive parts

I need the work done urgently, as the live maps are failing.