At Topper, we strive to deliver the best possible experience. If you believe we haven’t met our obligations or handled a matter appropriately, you can submit a formal complaint. We take complaints seriously and are committed to reviewing them thoroughly.
Submit your complaint (All Regions)
To file a formal complaint, fill out our dedicated complaints form with all the relevant details. Our team will review the details provided in your complaint and respond as soon as possible.
Additional methods (Europe)
If you're based in Europe, these channels are also available:
-
Phone (Voicemail)
Call +351 800 450 118 (Toll-free) and leave a voicemail on our dedicated complaints line with the necessary information. Our team will follow up with you via the email address associated with your Topper account. -
Electronic complaints book
Submit your complaint through the official electronic complaints book. -
Postal mail
Submit your complaint by mail in one of two ways:- Download and complete the Filing a Complaint.pdf, then print and sign it.
- Or send a free-form letter that includes the following details:
- Full name / legal entity and, if applicable, your representative’s name;
- EUID or, if not available, the national Registration or ID number;
- Legal Entity Identifier (if available);
- Customer reference (if available);
- Full address;
- Email address;
- Phone number;
- A detailed description of the complaint, including:
- What happened and when
- Your expectations for resolution
- Any damage, loss, or detriment caused (if relevant)
Include any supporting documentation and mail everything to:
Uphold Digital Assets Europe, Unipessoal, Lda.
Praça Conde de Agrolongo, nº 27, 1º piso
4700-312 Braga, Portugal
Postage costs are the sender’s responsibility.
Why does the mailing address say Uphold?
You might notice that our mailing address belongs to Uphold. Topper is a product created and powered by Uphold, which means all physical mail and formal complaints are processed directly through Uphold's headquarters.