How do I reinstall version 7?

I had used Compact before saying it takes up more room than 1Password 7. I did have the browser extension installed for version 8. The browser extension doesn't always unlock when I unlock the application. The extension seems to be confused because I always, that is -- always, use private browsing. Sometimes when the extension was locked, the only way to get it unlocked was to close Safari and reopen the Safari. Why does the extension have to have so many web sites enabled? A lot of them seem to be devoted to developer sites, beta sites, etc. and I do not do development or use any betas. I was able to reinstall version 7. Thank you. I do hope that version 8 gets better. The preferences in the app do not match the settings in the browser extension. They are not fully integrated.