3 configuration errors but no red hint

I solved most of the configuration errors. But one form shows 3 config errors without red highlighting. I checked your explanations, but I can′t find the three remaining errors in this one form. Where should I look, if I have no red highlight clue? I changed seperate fields, to find the wrong line, but this method didn′t change the number of errors.

<p span class="form-start-text">Anfrage</p>
<p>Ich habe Beratungsbedarf im Rahmen des unten dargestellten Themas.</p>
<br class=”clear” />
<p class="pflichtfeldtxt">
* Pflichtfelder
</p>
<p span class="felder"><label for="vorname">Vorname*</label><br />
   [text* form-vorname class:form-vorname id:vorname] </p>

<p span class="felder"><label for="nachname">Nachname*</label><br />
    [text* your-name class:form-nachname id:nachname] </p>

<p span class="felder"><label for="gruppe">Name der Bühne bzw. Gruppe*</label><br />
    [text* your-gruppe class:form-nachname id:gruppe] </p>

<p span class="felder"><label for="postleitzahl">Postleitzahl*</label><br />
  [text* form-plz /5 class:form-plz id:postleitzahl] </p>

<p span class="felder"><label for="ort">Ort*</label><br />
 [text* form-ort /30 class:form-ort id:ort]</p>

<p span class="felder"><label for="telefon">Telefon*</label><br />
    [tel* form-tel /20 class:form-tel id:telefon] </p>

<p span class="felder"><label for="mail">Mail*</label><br />
    [email* your-email class:form-mailadr id:mail] </p>

AND
Mail:

to : correct mail adress no error message
from: correct mail adress no error message
subject: Anfrage
Reply-To: [your-email]
Von: [your-name] <[your-email]>
Betreff: Anfrage
Name: [form-vorname] [your-name]
Gruppe: [your-gruppe]
Ort: [form-plz] [form-ort]
Tel.: [form-tel]
Mail: [your-email]
Kurzdarstellung
[form-angaben]

Could you help me? Woudl be great.