Whatsapp web doesn't connect to phone even though the internet has it?

I've never had problems with Whatsapp Web, but now it doesn't want to work anymore.

I'm informed that my phone is not connected or can't be reached. I logged on several times using the QR code, turned the Wi-Fi off and on, restarted the laptop and drove it up and down, but it still doesn't work.

Just while my laptop shows that my phone is not connected / accessible, I can easily write over the phone. Everything arrives, everything is connected. So my phone itself works.

Sometimes it is even the case that my laptop shows the messages written and received on the cell phone. Only messages sent from the laptop do not arrive, neither at the recipient nor on my cell phone.

Does anyone know advice?

Sometimes it happens to me that Whatsapp Web shows that.

It always works for me when I open Whatsapp on my cell phone and leave it open for a few seconds.

Then Whatsapp Web will automatically connect again.

I've already tried it, I can also write on my cell phone via whatsapp. But it doesn't want to connect to the laptop

Have you ever tried another device or cell phone?