I didn't want to copy the compliment, but I just got to episode 3, and I have to say, I really do like the production design. The 'FUCK OFF' on Mikayla's side of the cork board made me lol.
On episode 3- I immediately like the mean girl a lot. She's the first performer with any sort of scene presence. Serena and Roxanne are cute but very low-energy performers, even in their quippy dialog. That could be a directing thing, but as soon as episode 3 started, I latched on to Mikayla/Medusa because she was the first person who spoke with inflection and energy and I kind of wished the show were about her instead, even if she's kind of mean. I think I agree with Sam that it might be more of a directing issue than an acting one- sometimes, getting the words right isn't the only thing you have to focus on as a director, and the energy of the scene is often more important than being completely 100% true to the script.
Episode 4 has been my favorite so far, because the interactions all happened at a much quicker and more realistic pace. However, I'm left still not really knowing who anyone is. I know Serena and Roxanne are friends, and I generally know everyone's sexual orientation, but that's about it, and that's not enough for me to care about any of them or what happens to them. Also, there's still not really a story- there are just people who talk to each other about things I'm confused by.
The episodes with more people definitely have inherently more energy, which is good, but something you should probably consider for scenes and episodes with only one or two performers. Picking up the pacing will help, which I know isn't always possible when you're filming lots of scenes on a tight schedule, but especially for single person vlog episodes, it's really important.