FAB Pack Purchased - similarities to LEGO - is this ok to use?

I purchased this pack from FAB for PC
Platformer 7 Constructor - Low Poly 3D Models Pack | Fab

Hoping someone from the LEGO Team could help with a question, I want to use this pack in UEFN but not within the LEGO World so a standard map using the Fortnite Battle Royale style movement / play.

We have so far 9 maps all within 1 Map and the players move from one map to another every 5 minutes

2 of these maps are built using this Pack I purchased so wanting advice before publishing as we do not want this to flag up and do not want to have an account suspended so hoping we get get a Yes / No on using this pack within UEFN?

The bricks / blocks from a distance look like LEGO but when you look closer the top sticking out shapes are Not circular like the LEGO ones these have 12 sides.


From the top they look like this

Underneath they are totally flat

LEGO bricks have the tube look underneath

Another thing is a standard LEGO brick appears to be flat on all sides

The bricks in this pack have slight slopes on the edges / sides

I have already started modifying the bricks removing the shapes on top just incase we get advised not to use the pack in it’s current form so if needed these can all be made flat.
Images from one of the 2 maps using this pack

Thanks’ for any help / advice with this
Looking at the actual EGO bricks and the items in this pack IMO they are totally different designs but I have no idea if this is an infringement - issue with design / patent / copyright so thought I would ask for help.

Also would like to ask will LEGO ever release a pack in UEFN with Basic Brick style for us to use in standard maps outside the LEGO World?