Ok, thanks!
Also, while you're still around, I also use the $api->item->xlsx() function, it worked just fine with username/password authentication, but it will not work at all with app token authentication, which it says on the docs should work.
Here is the php error: (auth.php handles authorization and initializing the api, dl.php handles downloading files and xlsx documents, url's have been changed for privacy)
PHP Fatal error: Uncaught exception 'PodioAuthorizationError' in /var/www/webroot/podio-php/PodioAPI.php:271\nStack trace:\n#0 /var/www/webroot/podio-php/PodioAPI.php(301): Podio->request('GET', '/item/app/[[[appid]]]', Array)\n#1 /var/www/webroot/podio-php/areas/PodioItem.php(268): Podio->get('/item/app/[[[appid]]]', Array)\n#2 /var/www/webroot/dl.php(8): PodioItem->xlsx([[[appid]]])\n#3 {main}\n thrown in /var/www/webroot/podio-php/PodioAPI.php on line 271, referer:
https://domain.net/index.php
Gabe