Hello, LambdaSP,
Please submit different questions via separate topics next time – https://www.8theme.com/forums/xstore-wordpress-support-forum/
Single product builder > Tabs > edit content of the custom tab https://prnt.sc/93gBAUCg_oPP
https://prnt.sc/u0ma3nGtB5jY – go to static blocks and edit the content of the Delivery & Return block. Also, disable “Static Blocks Cache” in Theme Options > Speed optimization.
https://prnt.sc/HgjvJeTHHeaf – please clear the cache and check now, the translation form from the theme, so to change it, go to Loco translate > Themes > XStore.
https://ibb.co/6PsbnCG – what browser do you use? Please provide URL of the product with this problem.
Kind Regards,
8theme team