I used to have control over the files that my server hosted at Bluehost but my sites are now hosted by Weebly. I don’t see a way to use the Piwik code to track sites hosted by Weebly. is that true?

Please contact Weebly and ask them directly, Likely Piwik is not allowed there. Maybe they will be able to help? Feel free to post back here with the update, thanks!

I think you should contact Weebly administrator for the best guidance! I am sure that they will allow since it is not a matter!