Hey there,

I am really sorry for the delay of this reply as it is a public holiday for us here.

This issue should be fix in the current Payplans 3.7.1 version which compatible with Joomla 3.9.

By the way, I already help you manually applied those fix over your site, it should work fine now.

JoomlaFolder/components/com_payplans/xiframework/base/abstract/helper/toolbar.php
JoomlaFolder/components/com_payplans/xiframework/base/helper/toolbar.php

Thanks for your help its working again.

You're most welcome.

Just for your information, I have locked and marked this thread as resolved to avoid confusions in the future. Please start a new thread if you have any other issue in the future so it will be easier for us to manage your inquiries.

Thanks for understanding