Edit template groups

Good evening, I’m currently using car dealer theme and i have to change regular price for text field as some products being open for offers. When ill going to acf groups, it do not display me anywhere price field has applied acf-field_588f20535c12f

As far as i know it should be editable as .json but im not that much technical to find it out.

Previous post with more details:
https://ww.wp.xz.cn/support/topic/edit-price-from-number-to-text-at-cardealer/

The page I need help with: [log in to see the link]