I requested technical support for my country at support.nl@tp-link.com 

their answers should arrive within 24 hours , max 48 hours

Didn't got answer within 7days

Send another email

No answer

Finally had to phone into Nederlands and give a gmail address

There , while at phone found the reply in google spam !!! 

Same reason blocked as in my spamfilter spamtitan settings 

ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@freshdesk.com header.s=fdusmail header.b=YXedYDFp;
       spf=pass (google.com: domain of bounces+1.141410.55330-support.nl=tp-link.com@emailus.freshdesk.com designates 44.192.35.23 as permitted sender) smtp.mailfrom="bounces+1.141410.55330-support.nl=tp-link.com@emailus.freshdesk.com";
       dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=QUARANTINE) header.from=tp-link.com
Return-Path: <bounces+1.141410.55330-support.nl=tp-link.com@emailus.freshdesk.com>
Received: from mail-usn24.freshemail.io (mail-usn24.freshemail.io. [44.192.35.23])
        by mx.google.com with ESMTPS id a7si7279843qvd.327.2022.02.02.05.48.05

Learned that tp-link settings to send email from freshdesk are WRONG and not complete

FRESHDESK ISN!T included as permitted mailservers

v=spf1 include:spf.protection.outlook.com -all

I learned that TP-LINK HQ China don't care about this as the issue has been reported many times, including own service people

So to anybody concerned at TP-LINK HQ arrange this as  its bad image and more bad support to new/existing customers

Best regards