Having lots of issues with this theme

Hi,

I seem to be having lots of issues with this theme. I followed along with the YouTube video that Nayyar created to set up my site, but when I've gone back to test it out... some features are not working.

These are some of the issues that I'm having...

It won't allow new members to register or login

Social Media login/registration is not working

No menus are showing when you go to the site via mobile device

On a mobile device, it shows a drop down menu at the top of the home page, but the menu will not drop down

Extra filters such as job type, job category and location are not showing up on the advanced search bar on the home page as well as on the jobs page

On the Post A Job page, the job description area had pre-filled text to use as a template, but when you actually try to Post A Job that text shows up as little red lines not visible text

I would love to have this resolved as I'd like to have this site up and running as soon as possible. Please advise what I should do.

Thank you!

Cassie