Override columa dynamization with Sharepoint list data

Hello

I have a dataset from a sharepoint list, in which I need to override the column dynamization but every time I try it asks me to enter the credentials again.

Once the entries tell me you can't connect, let me try again (and this is the only step for which it asks me again for credentials). Already tried several times but it doesn't work

Are there any restrictions on override dynamization of columns with sharepoint lists?

How can I fix it or could it be done differently?

Thank you.