The newest version of the plugin fixed this problem, but some times the spinner won’t stop after sending… This problem is mostly caused by a conflict in your theme. This functionality can be overwritten and is fixed within this plugin: https://ww.wp.xz.cn/plugins/awcf7-stop-spinning
For a quick fix you could also look at this plugin: https://ww.wp.xz.cn/plugins/awcf7-stop-spinning/
If Contact Form 7 is causing a conflict with your theme then this could be the ideal solution.
