Also, I need to change recently viewed products in product page into English (Picture 3) but it still shown in Chinese after translation (Picture 4)
1. Please check the Theme Settings > Login/Register and replace there all the phrases, in addition, check the Wocoommerce > Settings > Account and Privacy/Advanced.
In addition, check Theme Settings > Shop > Compare/Wishlist you will also find a few phrases there to replace.
2. The title in the sidebar is translated in Appearance > Widgets > Enter all the widgets and replace the titles there.
3. I am afraid I have not caught the problem with “Recently Viewed products”
If you have any questions please feel free to contact us.