I cannot connect to any TS server i know , here is the message

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I have access to my router but i am a noob in networking and stuff like that.

chat thingie error:
<15:53:07> Trying to resolve hostname eu54.ts3.cloud
<15:53:11> Trying to connect to server on eu54.ts3.cloud:19298
<15:53:17> Failed to connect to server

Would be very happy is someone could help me!