You need a mobile-friendly/responsive theme to solve the mess on the submit job page (and all other pages). The theme defines the look of your job board.
There are addons for Gravity Forms and Ninja Forms. You can check them out on this page https://wpjobmanager.com/product-category/forms/.
Thanks for the reply, the theme I am using is indeed mobile friendly but somehow the job submission form is not being optimised. I have got both the Ninja forms and gravity forms job manager plugins installed and I have created a job submission form. The problem is how to link this job submission form to the job board, ie automatically post the job on the job board after submission.
The problem is how to link this job submission form to the job board, ie automatically post the job on the job board after submission.
I think you are not using the plugins right. They should be used for applications, not for new job submissions.
You can use the plugins to add a form to the jobs that will be used for sending the applications, not new jobs. If you want to extend the job submission form you can follow the tutorial here https://wpjobmanager.com/document/tutorial-adding-a-salary-field-for-jobs/ and shouldn’t use the plugins.
Fixed, I just had to edit the short codes