Malwarebytes is blocking the above site "due to phishing" as shown below. The entire website www.stamps.dk is not blocked. Blocking only occurs after attempting to progress beyond the site in the subject line above (i.e. when trying to place a bid on a card).
I have bought many items from this seller in the past (including since I installed Malwarebytes) and never experienced this problem before.
It needs investigation
Website blocked due to phishing
Website Blocked: www.stamps.dk
v2.6.16 | Heuristics: phishing
Malwarebytes Browser Guard blocked this page because it may contain malicious activity.