Changes page index

Hello everyone.

I am new to the community and would like to ask you which section I should contact to change the content shown on the index page of the phpList. Where the links appear:

Subscribe to our newsletter

Update your preferences

Cancel the subscription to our mailing lists

Contact the administrator (this last one is in an incorrect language and I want to change it, which section should I contact?)

Thank you and I look forward to your response.