So I went to a coding camp for 14 to 24 year olds, and last night, I went out with a group of people from that camp. I started noticing that there was something about this girl that caught my eye. I slept on it, and today was the last day of camp, so I wanted to chat her up a bit more. We talked a tiny bit, but we were pretty mute. At the end of the day, I sat beside her to finish off some work, and then when the day was over, she got a taxi and went to the station. I told one of the other girls when walking back to the college to pick up our bags and she advised me to text her about some common interest (e.g. Pokemon Go) later in the evening.
We were in a massive queue on the motorway so I decided to text her whilst on the motorway (She gave me her Facebook and Instagram). When I tried to chat on Messenger, she didn't show up, and further checking pointed to her blocking me, which baffled me because there was no reason why she would do that. I could text her on Instagram but it seems to me that she doesn't use that account anymore.
What should I do from here as I have no idea where to go.