squarespace Zype pluing not able to customize

Hi Team

please help with making changes in zype pop up in the Square space website

Note this is not straight forward so if you have expertise in Square space account management and Zype plugin then please reply

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This is the website

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When you click on Sign in the styling for the pop up is in a differnt color and after sign in it does not show the sign out option to the users

CSS HTML JavaScript PHP Design de Sites

ID do Projeto: #17633856

Sobre o projeto