Links in German version of "Submission ORCID"-Mail not generated correctly [OJS.]

Dear all,

the links in the mail for ORCID authorization and registration of a contribution are not generated correctly in the German version of the plugin. This affects the two links “Register or connect your ORCID iD” and “More information about ORCID at journalname”. I use version of the plugin.

Here is the not working German version of the E-Mail:

<p>Liebe_r XY,</p>
<p>Sie sind als Autor/in eines eingereichten Beitrags bei der Zeitschrift sub\urban. zeitschrift für kritische stadtforschung benannt worden.</p>
<p>Um Ihre Autor/innenschaft zu bestätigen, geben Sie bitte Ihre ORCID iD für diese Einreichung an, indem Sie den unten angegebenen Link aufrufen.<br /><a href="<a href='' class='authorOrcidUrl-style-class'></a>"><img id="orcid-id-logo" style="display: block; margin: 0 .5em 0 0; padding: 0; float: left;" src="" alt="ORCID iD icon" width="16" height="16" />ORCID iD registrieren oder ihre verbinden</a></p>
<p><a href="<a href='' class='orcidAboutUrl-style-class'></a>">Mehr Informationen zu ORCID bei sub\urban. zeitschrift für kritische stadtforschung</a><br /><br />Wenn Sie Fragen dazu haben, melden Sie sich bitte bei mir.</p>

And here the working English one:

Dear XY,<br/>
You have been listed as an author on a manuscript submission to sub\urban. journal for critical urban research.<br/>
To confirm your authorship, please add your ORCID id to this submission by visiting the link provided below.<br/>
<a href=""><img id="orcid-id-logo" src="" width='16' height='16' alt="ORCID iD icon" style="display: block; margin: 0 .5em 0 0; padding: 0; float: left;"/>Register or connect your ORCID iD</a><br/>
<a href="">More information about ORCID at sub\urban. journal for critical urban research</a><br/>
If you have any questions, please contact me.<br/>

I have checked the emails.po locale of the ORCID-Plugin, but there everything seems to be identical.
Maybe the error has something to do with the {$authorOrcidUrl} and {$orcidAboutUrl} variables?

Thanks a lot in advance,