Im not sure what Walletmors policy is, but i think it is supposed to be an authorized installer 
Walletmor is a completely independent company from Dangerous Things and VivoKey.
Amal encapsulates them and probably supplies the needles.
The warranty i mentioned is a DangerousThings one, and completely fair
heres the relevant excerpt for your reference
Additionally, the polymer coating is very robust, but very thin. If the flex device is handled with tooling such as forceps or tweezers or any tooling other than a sterile gloved hand, it could be punctured or damaged in such a way as to allow moisture to infiltrate over time and damage the internal encapsulated electronics.
As such, flex products carry a 1 year limited warranty, under the condition that the installation must be done by a professional and the installation procedure must be recorded in one single or multiple smaller videos which show;
- the flex device being removed from the vial, pouch, or polymer bag on to the sterile field.
- the flex device being picked up and manually installed by the professional without tools.
and the link for further info