Mooer asks too many "mandatory" information to provide the waranty of their products (name, full adress, mobile phone number, scan of the invoice, ...) while all other companies either provide their waranty directly inside their product or just ask for a serial number.
Never had these kind of request for a waranty from Roland/Boss, Yamaha/Line6, Fender, Korg, Steinberg, Cort, Squier, Thomann, ...
The only use of these kind of personnal information for a guitar pedal manufacter is to sell it to third parties, spammers or direct chinese competing (with Thomann) companies.