Alside Windows

I filled out Alside claim form the Summer of 2022. I received no response. In 10-2022 I called Alside. [protected]. They said that the warranty only covers the first two owners. I do not know how many owners there were. They would not cover the lifetime warranty for ul-5 window failure. Three windows have failed, and the failure was long before I bought the home in 8-2021. Two windows have massive ugly stains between the window panes and one will not stay up. They are AAMA certified gold. Three window repair companies have told me that the stain between the panes, are a manufacture defect. It involves a failure of the coating inside the panes, and should be covered under the warranty as a manufacturer defect. This should supersede all other warranties.