Yes, I have plans to update it to v3 in the near future!
As for the versioning - you should be able to access Licenses 1.7 and LCP 1.71 (for player-side, NPCs are 1.1), I've verified this works on my end. Please let me know if it doesn't for you and any other information that can help me pin down what the problem could be, and I'll look into it more closely.