For users on , the native WhatsApp Desktop App is no longer compatible, as it officially requires macOS 11.0 (Big Sur) or newer . The only functional way to use WhatsApp on this OS version is via WhatsApp Web . How to Link WhatsApp Web on macOS 10.15.7
If you prefer the feel of a dedicated application, you can turn the WhatsApp Web tab into a standalone window using a "Web App" feature in modern browsers: Installing WhatsApp on my Macbook air 10.15.7 whatsapp web mac os 10157 link
For users running macOS 10.15.7 (Catalina) , the primary and most reliable way to access the service is through WhatsApp Web The Compatibility Gap on macOS 10.15.7 The current official WhatsApp Desktop app macOS 11 (Big Sur) macOS 10
To summarize, the search usually indicates a portable network issue between your browser and WhatsApp’s servers. The most reliable fix is: Go to System Settings → General → Transfer