Hi Thomas,
A small technical point, maybe insignificant, but sitemap.xml code produced by "A1 Sitemap Generator v9.1.0 Pro" begins with these 2 lines:
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
I suggest that you might now update those URL references to SSL secured https://
Regards,
Gary, IT ZAP Website Design Works.