You should implement their Uikit atom (version 2) not version 3 from us. Inspiretheme still using Uikit version 2 for their particle. Please ask support via Inspiretheme if you use the particle (portfolio) from them.
JoomLead Gantry 5 particles 2.2.0 released, new features and bug fixesChangelog
Cyber Monday is finally here! Save 30% OFF everything. Use promo code: 30OFFCMShop Now