Has anyone had an issue with their LED screen on their vamo v2? Mine worked fine when I first received it, after a couple weeks, the 2nd number started fading out and I could not read it. Now the first number is gone as well. I get a couple lines of the number but now I cannot tell what voltage/wattage I am on. I contacted the company and they are going to replace it and I was wondering if anyone else had this issue with their vamo. I'm sure it is a faulty LED screen as I have never dropped it or anything.