Things that were never explained?

I feel like the first season is a separate show from the last two seasons. I know they brought in a new showrunner for the second season. I very much enjoyed the first season and the weird kind of Twin Peaks vibe it had going for it. I can't seem to recall if the following plot points were ever explained:

1. What happened to Roman and Olivia's ability to control minds? In the first season both were able to control other people's minds.

2. What happened to Olivia's eye drop addiction?

3. Why don't they have fangs? In the first season, Roman had fangs in the final scene. By the second season, they had unhinged jaws.

I feel like this show started out as something weird and interesting and just turned into a steaming pile of crap!