Good afternoon!
Sergey, daily users make orders at LinguaLeo. Yes, there are situations when cashback does not appear, about which there are reviews on the store page. Several factors can influence the accrual; therefore, each situation is individual.
We are always ready to understand and help. Please respond to the manager in the appeal through the mail or the section "Help", "My complaints".
Respectfully,
LetyShops team