The spinning arrow is a common symptom of a JavaScript conflict with either your current WordPress theme or one of the other plugins you are using. It can also be caused by a server-side warning or error. See Contact Form 7 Email Issues – there is a link there that covers JavaScript Conflicts.
Same issue for me while activating Woocommerce. The email got sent but the error/vaildation messages never showed up and the spinning arrows would spin forever.
I had left this line in my wp-config.php while debugging another issue, define('WP_DEBUG_DISPLAY', true);, which disabled the validation/success message.
Please also see this thread in the WooCommerce support forum.
@niklaswallerstedt – that will only stop your particular problem from being reported if you have WP_DEBUG_DISPLAY activated ( something you wouldn’t normally do on a production site ).
It doesn’t change the underlying problem – it just doesn’t report it.
Also the OP’s problem – despite any similarity in symptoms – could be completely different.
Same as @tony, only spinning icon when CF7 and Woocommerce plugins used together.
WP – v4.3
Contact Form 7 – v4.2.2 (latest)
Woocommerce – v2.4.6 (latest)
Theme – twentyfifteen
All other plugins disabled.
Any help appreciated.
Same issue here.
WP 4.3
Contact Form 7 4.2.2
Woocommerce 2.4.6
Base theme and no other plugins active.
This thread could be of help
A similar problem has been addressed by @takayuki and @jason
Thank you @davmerit, this comment solved my issue.
If this resolves your question, it helps others contributing here, you can flag your post as [resolved]
The problem has been resolved! Thanks the Plugin Author. Cheers!