WLAN full reception, but internet only works to a limited extent?

Wa
7

Today I bought a new Wi-Fi router. Same provider as my cell phone tariff, because the Internet works great on my cell phone.

All the router's indicators light up blue → best connection. Unfortunately, the Internet is very bad.

I can send and receive Whatsapp messages.
Instagram loads very slowly, Netflix doesn't work at all, just as few as Snapchat.
Whenever I enter something in Safari, the only thing I get is: "This connection is not private."
then I click on: "Visit site anyway." But then it says there's no connection to the server.

Can someone give me some advice on what to try?

th

Try to get closer to the router

Fo

May be due to the provider. Look for malfunctions

Wa

Device and router are right next to each other

Wa

But why does my mobile internet from the same provider work so well?

Fo

It's not always the same. DSL = / LTE

Wa

But is not DSL. Wireless router (except for the power cable) so it should also work via LTE

Fo

Hmm can be because of the router.