Custom Code Weglot / 2 <Head>

Hello,

I don’t know anything about coding and I’ve been using Weglot to translate my Webflow website in english. For some reason I needed to erase my translation and start it all over again, so I again copy pasted their code into “Custom Code”. But it didn’t work this time. The Weglot team tells me it might be because I have 2 into my code (enclosed doc that he sent me) and that I should get rid of one. I have no idea how to do that, can anyone help me ?

Thank you !
Lucie