There are several reasons which can cause the MetaMask extension not to work in Chrome such as server downtime, network congestion, old version browser or extension, etc. But one of the most common reasons which can cause the problem of the
MetaMask Chrome extension not working in Chrome is, having more than one browser-based wallet active and installed in the extension.
Security is one of the most considerable term while using any crypto-related platform by any investor or trader. If we talk about, the MetaMask Google Chrome browser extension in terms of safety then it is completely safe to use. It does not store any of the personal data of its users on its servers. Everything is encrypted in the user's browsers and secured via their password.