If you encounter a problem with a purchased item, you can report it via the Resolution Center: create a Resolution Center report and resolve the issue with the merchant directly.
If you have a problem not related to a specific product, open a ticket here: create a new ticket
If you encounter a problem with a purchased item and/or key activation, you can report it via the Resolution Center using the following link: create a Resolution Center report. Alternatively, you can also file such a report directly from your Kinguin Inventory when viewing a key, as per this guide: Kingu.in/RC-guide
Once you select the appropriate key to report, you will be asked to upload screenshots proving your case there. After filling the report in, it will go directly to the merchant who has sold you the key.
Furthermore, if needed, you can also Escalate the case to bring it to Customer Support's attention.
However, if you have a query not related to an issue with a specific product, please use the following link to open a new ticket here: create a new ticket. Customer support will look into your inquiry and provide you with an answer as soon as possible.