Whmcs support

admin

Currently attempting to set up whmcs 8.10.1 happy version + Alipay plugin + php version 7.4.
However, when paying through the billing page is always loading an error occurs.
See https://github.com/52fancy/whmcs-alipay/issues/3 for details.
The problem was that it was unable to load the customer page after switching to Lagom template.
After trying to download Lagom 2.2.6 Happy Plugin, I encountered the same issue when opening the customer page.
I've been searching for some time now and it seems that the IonCube version is too high and doesn't support v14.
However, I'm not sure how to downgrade IonCube to 10.4.3.
Could you please help me with this?