Hi,
01. I have disable the Custom Layout for the Product Archive under the Dashboard> Layouts >
The sidebar was appearing as you can see in the following Image: https://ibb.co/X58jDHq.
So, it seems that there is some third party Plugin element or some third party Custom Code added in your Custom Layout which is causing the sidebar to not work correctly.
02. Your second issue has been resolved Go to layouts> Single Product Layout Accessories> Edit with Elementor: Here you can edit the text as per your need: https://ibb.co/R08YX3Y
Best Regards.