This is the data

Two additional comments speculating as to the issue(s) you're having:

1. Perhaps the issue was with trying to read the CSV directly through the link you give at the beginning of the post: if you read data from GitHub, make sure you read data as "raw" data (see the revised link I use inside read_csv).
2. As an intermediate step, always inspect the ggplot object (here: p3_plot) prior to "plotly-fication". If that plot is empty/wrong, the issue is not with plotly.