I need Expert in WORDPRESS..

This is the site [login to view URL] I am getting a lot of inconsistencies in how the Facebook share looks between my posts. Sometimes an image, sometimes no image. I have specified in Every post using Yoast the desired image, but the Facebook scrapers aren't picking up the SEO properly, even when using the debugger. This is basic issue i mean simple if you are expert with wordpress i can hire u immediately. and also i will hire you for next Wordpress other JOB. Note:- My budget is 10 usd for this and we will discuss for next after this its test u can say and i need it done in 2-3 hours. Thanks