Conflict: E-Newsletter & Woocommerce Storefront Theme

We have verified a conflict between Woocommerce Storefront theme and e-Newsletter.

The conflict appeared immediately after the recent Woocommerce update.

When e-Newsletter is activated, the APPEARANCE/CUSTOMIZE screen quits working on Storefront.

When e-Newsletter is activated, the URL on the APPEARANCE/CUSTOMIZE tab does this:
wp-admin/customize.php?return=%2Fwp-admin%2F

When e-Newsletter is deactivated, the URL on the APPEARANCE/CUSTOMIZE tab does this:
/wp-admin/customize.php?return=%2Fwp-admin%2Fplugins.php%3Fplugin_status%3Dall%26paged%3D1%26s