SharePoint REST - Fetch list items w/ skiptoken gives HTTP 403 - list

Question

I am GETting a bunch of list items from a SharePoint Online site using a PowerShell script. I need to fetch all the items, using the
/_api/web/lists/getbytitle('MyList')/items
REST call.
I can call this endpoint just fine and receive the first 100 items. But when I call the URL for "skiptoken" which I received in the response, I get a HTTP 403 (Forbidden).
What am I doing wrong?

Answer 1

After struggling around I decided to resort back to using the CSOM and CAML query. This is not as flexible as the REST service and makes working on the result a little harder, but did the trick (code functional, but might be a good idea to split this up):
$context = New-Object Microsoft.SharePoint.Client.ClientContext($site)
$credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($user , $password)
$context.Credentials = $credentials
$query = New-Object Microsoft.SharePoint.Client.CamlQuery
$query.ViewXml = '...'
$web = $ctx.Web
$lists = $web.Lists
$list = $lists.GetById($listID)
$ctx.Load($lists)
$ctx.Load($list)
$ctx.ExecuteQuery()
$resultCollection = New-Object 'System.Collections.ArrayList'
do {
$items = $list.GetItems($query)
$ctx.Load($items)
$ctx.ExecuteQuery()
$items | ForEach-Object {
$item = #process item here
$resultCollection.Add($item) |Out-Null
}
$query.ListItemCollectionPosition = $items.ListItemCollectionPosition #advance cursor
} while ($query.ListItemCollectionPosition -ne $null)