A company offers different service levels. One feature is meant only for the higher level, but the company gave a lower-level customer access to it. The customer used it thinking it was allowed, then later learned others paid extra. Is there any sin on the customer, or only on the company?

Ustadh AbdulAziz al-Haqqan

There is no sin upon u as it is their mistake, and alhamdulilah that u informed them and stopped immediately after knowing u needed to pay more and it is a mistake.