The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.
Every things Working Fine
The OpenSRS Domains Pro module allows you to register, renew and transfer domains from an ever-expanding selection of TLDs, including many new gTLDs. This module supports domain locking and WHOIS Privacy for select TLDs, as well as WHMCS Domain Sync.
Advanced domain module for WHMCS - Easily offer over 2000 TLDs to your customers
Khalequzzaman @khalequzzaman1317
You should upgrade ionCube Encoder version for PHP 7.x+