Hi,
let me share my opinion on what happened to your account:
First you must understand that when it comes to the types of products you were selling within the listing of a competitor, these are basically free China market products, every seller who knows a little bit about sourcing products from China can buy.
So a lot of sellers ask themselves what they can do to protect themselves from people like you who are basically buying the same product from the same supplier in China and just sell the item within the listing of the seller who originally created the ASIN, wrote the product information, took the pictures, bought the EAN and so on.
What they will do in the 9 out of 10 cases is to create some kind of own brand. This will give the buyer the impression, that he is buying a brand name product while most of the times he is buying the same product as in ten or more listings all over Amazon, which might have not such a strong sales rank, could even be cheaper etc.
As we all know, sales on AZ are defined by sales rank besides other factors. So sellers have a strong interest to protect themselves from sellers like you, because they possibly spent a lot of money pushing this listing, buying AZ reviews, launching advertising through Amazon sponsored product programs and so on.
In your case, the brand is some kind of conglomerate of different companies selling as XpressBuyer, Stoga and others and they sell game controllers, TV boxes and other basic electronic items.
The brand is registered in the UK amongst other countries. You can check this here:
https://www.ipo.gov.uk/tmcase/Results/4/EU013858295
The owner of this brand is a strong Chinese seller. There also seem to be UK companies involved in selling products under this brand. If you put some hours of research into it, you might find some connections between the sellers.
What happened to you is that the brand owners registered with Amazons brand protection program and got you kicked out of the listing. Since they launched several complaints at once, your account got suspended right away, sometimes they let you off with a fair warning.
Now my main point:
If you have the time, money and resources you can easily argue this decision in court. Most likely their position will not hold up in court. There have been several court cases all over Europe that have decided over matters like this.
It here all depends on the way the seller is backing up his brand selling approach.
Most of the courts decided the following: It is by far not enough to just state, that this is a brand name product, while it is actually an OEM open market product, everybody could just easily buy from the same supplier. It is also not enough to print out a sticker and attach it to the OEM product and say: Hey guys, now it is a brand name product. For the courts it does not work this way.
You have to have:
Your own brand name attached to the product so that it is non-removable
Your own branded packaging
Your own branded instruction manuals
Your own registered brand name
and so on and so on.
Most of these kind of brand sellers do not take these steps, as they mean additional costs and time added to each product. These sellers operate on quantity and quantity only, so in 9 out of 10 cases they will not do these steps and develop a real brand product.
Of course to make 100% sure, you have to buy some samples from this supplier to check.
In the end it comes down to the following:
Are you willing to invest your money, time and effort into the approach of suing him?
You will most likely win, but with courts it takes time and money.
If you are interested I can give you the numbers of the court decisions.
Hope I could help and clarify, as always if you have more questions do not hesitate to come back and ask.
AMAZON Uk account got suspended 
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