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.
Gantry 5 Particles 2.2.2 released with with new features (lazy load image, new Card Slider) and bug fixesChangelog
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