I rented the <...> through 2021.03.24. It is supposed to give numbers between 0 and 1, but frequently gives values above 1 and sometimes below 0. How can I get a refund?
You don't — you used it you pay for it.
There is no refund option in the Market especially for rented products:
Forum on trading, automated trading systems and testing trading strategies
i want to cancel a none active purchase
Eleni Anna Branou, 2020.10.23 09:37
I think - "having 0 activations" = no any activation used (did not install the product in Metatrader).
So, there is one way only related to it: dispute buyer vs seller: post #254
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