Am i using the wrong pool or am i using the wrong configuration

[jhood2880]

Ok so I am still fairly new to mining. I have been mining for about 2 years. So I am pointing 3 Gridseed GC3355's. Here is what my pool is showing. What does "invalid" mean? Should I be changing pools? Again I don't know if this is normal but it doesn't look normal. The pool is wemineltc.com. Any help would be appreciated

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Your Valid: 49464
Invalid: 953960