I am having the same issue with WordPress HTTPS and woo commerce. When I activate the plugin, it causes our store to redirect
Does this help: WooCommerce > Troubleshooting SSL issues
From the article:
WooCommerce uses WordPress’ is_ssl() function to redirect insecure pages. This can cause a redirect loop in the following instances:
1. You have another SSL plugin installed, such as WordPress HTTPS, trying to un-force the secure URL. Remove the other plugin, or turn off the Force SSL setting.
Perhaps the “Force secure checkout” checkbox is checked in the WooCommerce > Settings > Checkout tab. Does unchecking that fix it?
I solved this issue myself by turning off the Force SSL setting within WooCommerce Settings, and then explicitly setting these 3 WooCommerce pages to use SSL via the checkbox provided as part of this plugin (on the Edit Page screen).
The 3 pages needing SSL according to WooCommerce are:
1. Checkout
2. Checkout -> Pay
3. My Account
