WhatsApp Desktop App not linking

I am facing problem with my iPhone 15 link with WhatsApp Desktop App. It's just not happening! I am able to connect with WhatsApp Web. I have also tried linking an Android phone with the WhatsApp Desktop App, and it was happening. The issue is only with the iPhone.

Even after deleting and reinstalling the latest versions of WhatsApp for a number of times, updating my iPhone and Laptop as well, linking the devices once through the QR Code and once with the Phone Number, switching between different networks, it constantly shows the error and redirects me to the home page. I am very sure it's not the Network error but some glitch/bug that isn't fixed. WhatsApp Desktop App is way more convenient than WhatsApp Web and it's very frustrating when it doesn't connect.

Kindly resolve it at the earliest.