Pagelines Platform max file upload

I’m using Platform 1.37 (don’t wish to upgrade due to custom coding). Trying to upload a media file that exceeds 10-MB. Have updated the php.ini file through my file manager in my web host, but there is no change to Platform’s behaviour: still says 10MB limit. Which means there must be something also in Platfrom or WordPress that needs changing.

Any ideas?

Much thanks.