I am not receiving emails from the domain @tp-link.com

I am not receiving emails from the domain @tp-link.com

TP Link is one of our Hardware suppliers, particularly the APs that we use within the company. 
We need to have communication with them to be able to resolve our queries. 
When we send an email to your email address, an automatic ticket is generated 
and we should receive confirmation that this ticket was generated and the ticket number created. 
That is not coming, nor are your responses from the Help Desk. 
The email they use is support.ar@tp-link.com.
 It's as if Zoho is directly blocking it. Could you help me?.
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