Issue with responsive layout on mobile

Hi, I am new to the plugin and I find it very intuitive to use. However, I’m having issue with displaying the table on mobile.

Firstly, it’s about the merging of 2 cells. I merged 2 cells (cell 13) and it was displayed ok on desktop but on mobile/tablet, the merged cells duplicate themselves. Refer to screnshot:

desktop: https://drive.google.com/file/d/1_7PClziiL7ZiZqAIhYV2G9pB92yqGuKl/view?usp=sharing
mobile: https://drive.google.com/file/d/1bUyu8ApzJUxunwllp5n5NDRq64My6A72/view?usp=sharing

2nd problem is the table is displayed differently on the front end and back end.

backend: https://drive.google.com/file/d/1BZfO8Aq_Uhc53V9ffpXHauSVnsxbDQoz/view?usp=sharing
frontend: https://drive.google.com/file/d/1mr2AMA0U_oU8FGi4eSvpiLnXlHKbx7e1/view?usp=sharing

This is the page that I tried with the table: https://parking.com.my/item/test-location/

Thanks

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