What is the ruling on dealing and working with Dubli company, knowing that it acts as an advertising and marketing intermediary for online stores, and offers shopping tiers to customers (free and premium with fees and subscriptions), in addition to tiers for agents (non-exclusive with fees and commissions)?

There is no objection to dealing with the category of free shoppers. However, the other categories that require payment of fees to obtain benefits, such as increasing the cashback percentage or earning commissions (premium shoppers and agents), are impermissible due to their inclusion of gharar (undue risk/uncertainty), as the subscriber pays money without knowing exactly what they will receive. This is in addition to the caveats of network marketing. This is similar to dealing with discount cards.