I have used SEO by Yoast for my SEO. My main problem here is, in the SEO field, it will always prompt “Warning: Title display in Google is limited to a fixed width, yours is too long.” But the thought is the characters I’m using is less than 55 letters. I’m having this problem in my Woocommerce, everytime I will “add a product”
but the rest of the pages and posts are okay.
If that doesn’t work, you may want to try removing the plugin and then reinstalling it…although I don’t know if that would wreck anything you’ve already done or not. I doubt that it would though.