yoast seo conflict

Hi there,
i don’t know if i am the only one but the guys at athemes told me to contact you.
I am running sydney free theme with page builder and so widget bundle.
10 or 14 days ago i noticed some stranbe behaviour on my site when on tablet. then on my laptop i noticed that the page builder wasn’t working in the backend which means i couldn’t update my site(i don’t know how to code).
So the nice guys from athemes told me to deactivate all plugins. I activated them one by one and just at the end i discovered that yoast seo was cousing the problem.
Please help me to solve this problem.

thanks,