I am attempting to set up a scheduled refresh for one of my dashboards. It is pulling three CSV files that are refreshed automatically in sharepoint and has a connection to those three files. Shown in the screenshots below I cannot update my data credentials and it's only allowing me to see my data connections in the gateway. I do not have rights to download on premise data gateways onto this PC. How can I fix it so my credentials are valid and I can set up schedule refresh?