Phone Doesn't Always Turn On....When it does, it flashes continuously!

I have a Motorola e815. The casing holding the antenna broke off a while ago, but it was still very operable as long as the two metals were making contact. Suddenly, I woke up one day after charging it and whenever I try to turn it on, it either doesn't work or the HelloMoto screen flashes forever. It only turns on when plugged into the charger. Verizon told me it had water damage because the sticker was red. However, I never dropped it in water -- I am certain -- and it had not been near water for the two weeks after I glued the antenna casing back on. Did glue get on the chip? Please help! Thanks in advance, Ryan