Hi Carlos,
Right now the tunnel provider (ngrok) has a limit of the number of connections or resources loaded in a given time. So, if you have a page with a lot of images, stylesheets, or scripts, you can go through the limit quickly.
We’re going to be improving Live Links this year and run the tunnel through Flywheel’s infrastructure rather than ngrok’s.
In the meantime, I would recommend plugin using a minification and/or lazy image loading plugin to reduce the number of requests on the pages.