Custom Email Template in Campaign Monitor for Outlook

How can I solve the Outlook problem in my custom html template. What I currently have:

<table cellpadding="0" cellspacing="0" width="700" align="center">
          <tr>
            <td style="width:100%;display:block;" align="left">
              <!--[if mso]>
                <v:rect xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="urn:schemas-microsoft-com:office:word" href="https://" style="height:40px;v-text-anchor:middle;width:170px;" strokecolor="#ce162e" fillcolor="#ffffff">
                <w:anchorlock/>
                <center>
                <singleline label='Button Title'>Read More</singleline>
                </center>
                </v:rect>
                <![endif]-->
              <a href="https://" style="border:2px solid red;text-decoration:none;">
                <singleline label="Button Title">Read More</singleline>
              </a></td>
          </tr>
        </table>

If an outlook mail client opens the mail, I can see the CTA, but if I edit the CTA text in the editor in Campaign Monitor, the changes only apply to non-Outlook mail clients. Is there a way to solve that problem?

Many thanks in advance.

Bests, Yanick