How to connect my Amazon Firestick to a new wifi provider?

Posted 27th Dec 2019
I bought an Amazon Firestick two years ago and connected it to my Plusnet router. I have now changed over to Vodafone and on my tv it is saying that there is no network connection for my Firestick. Can somebody please tell me if it is possible to connect this Firestick to the Vodafone network now and how to do it (perhaps by going to settings) - my remote is not letting me do anything by the way? Thank you.
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