Diff Resume is operated by DotDev Dominik Tarkiewicz, a sole proprietorship established in Poland. Support, billing questions, refund requests, and privacy requests all go to the same monitored inbox:
Business details
DotDev Dominik Tarkiewicz
ul. Legnicka 16, 53-673 Wrocław, Poland
NIP (tax identification number): 8971909378
We aim to reply within 2 business days. For billing questions, write from the email address on your account and include the approximate date of the charge.
Before you write
- Refunds and cancellations: see the refund policy — subscriptions can be canceled self-serve from your account page.
- Data export and account deletion are self-serve on your account page; how we handle data is in the privacy policy.