The changing calculation timeframe and campaign length feature enables Shopify stores to comply with all the local variations in the EU.
Head to the Settings section of the app to:
Adjust the timeframe for calculating the lowest price
By default, the Omnibus requires countries to show the lowest price from 30 days prior to a discount
Define the maximum allowed duration for your campaigns
If a discount duration exceeds this length, the lowest prior price will be set to the lowest price from the past 30 days from the current date (instead of 30 days prior to the discount start)
Define how a discount start is indicated
By default, the Omnibus directive's definition of "prior to discount" is the period before the product was discounted from normal price to a discounted price.
=> Discounts starts when: Price changes to discount
However, in countries such as Poland, a price change during a discount will "reset" the discount period.
=> Discounts starts when: Each time a price change occurs
If you choose to modify these values, make sure that they are compliant with your local regulations.