Configuration of custom map provider

I am trying to configure a custom map provider as seen below but would need some help with the troubleshooting.

On most zoom levels I just get white tiles loaded. "z" in the url seem to vary from 0-11 and x and y (inverted) are in opposite order than normally in urls. Any tips here?

<?xml version="1.0" encoding="UTF-8"?>

<providers>

<!-- Lantweb -->

<provider id="12733" type="0" visible="true" background="-1">

<name>Weblant</name>

<mode>Topo</mode>

<countries>Sweden</countries>

<url><![CDATA[</url>" rel="nofollow noopener" target="_blank">http://ext-webbgis.lansstyrelsen.se/sverigeslanskarta/proxy/proxy.ashx?http://maps.lantmateriet.se/topowebb/v1/wmts/1.0.0/topowebb/default/3006/{z}/{y}/{x}.png]]></url>;

<zoomPart>{z}-8</zoomPart>

<zoomMin>9</zoomMin>

<zoomMax>19</zoomMax>

<tileSize>256</tileSize>

<attribution><![CDATA[© Lantmäteriet]]></attribution>

<extraHeader><![CDATA[Referer#</extraHeader>" rel="nofollow noopener" target="_blank">http://ext-webbgis.lansstyrelsen.se/sverigeslanskarta/]]></extraHeader>;

<extraHeader><![CDATA[User-Agent#Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1]]></extraHeader>

</provider>

</providers>

CUSTOM ONLINE MAPS