Wordpress Gravity Forms Currency Switcher per form

We have built a service builder for a car detailing website called www.gtechniq.co.uk. We are using gravity forms to power the service builders using advanced conditional logic plus a few other gravity form plugins to achieve the calculations. The service builders can be found here https://www.gtechniq.co.uk/service-builder/. You will notice that there is a service builder for GBP, Euros and Dollars for both the auto and marine builders. Before gravity forms made the big update to 2.5 we ran a plugin called Gravity+ Multi-Currency Selector which allowed us to change the currency per form. Gravity forms only has the ability to run one currency across the install. Unfortunately, the update has disabled the ability for the gravity+ Multi-Currency Selector plugin to function and all the service builders appear in the same currency which is set by gravity global currency setting. There is also no update for the gravity+ plugin too. I'm reaching out to see if any one would be able to change our currency symbol on each form or to take a look at the gravity + plugin and provide a fix. We have searched everywhere for a replacement but there is nothing on the market and all other options are outdated. In short we just require the currency symbols per form to reflect $ and $ for the links below rather than showing £. All calculations are currently correct:
https://www.gtechniq.co.uk/service-builder/auto-service-builder-euro/
https://www.gtechniq.co.uk/service-builder/auto-service-builder-us/
https://www.gtechniq.co.uk/service-builder/marine-service-builder-euro/
https://www.gtechniq.co.uk/service-builder/marine-builder-us/

Best Regards