With stores having name of a brand in the name, you should be careful, because just the brand name is not enough. There are often several stores with names like Mybrand store, Officical Mybrand store, Mybrand Official store, … and some (or all) are fakes - not related to the manufacturer at all.
So, we would probably need exact names, maybe even links.
To add something…
GOOD:
I have good experience (including support) with Manker: “Mankerlight Store” id:1406554
VERY BAD:
And also very bad experience with “Elfeland Outdoor Lighting Store” id:1925442