Pink and Green Image

We have ou Ring Doorbell sence XXXX. We live in Brasil, but as we normally visit USA, we decided to bring with us. We don´t have Ring in Brasil, so, there´s nobody here that can help us with this problem. Both always worked perfectly, but one of them started to show pink and green images at the recorded videos or when we use the live view. Videos quality are terrible too. Detail, we live in an apartment (12 floors building), so these Ring Doorbells doens´t has direct sun or rain, it´s an “indoor” Ring Doorbell. Anyone has an idea what is happening? Any suport or garantee from Ring?