Service Desk Plus not fetching emails

Service Desk Plus not fetching emails

Hi,

I have Service desk Plus MSP ver. 8.2 build 8211 and I was using email fetching features to receive requests by mail to open a request automatically... it was working fine with no issues, but suddenly it stops fetching emails without doing any changes from our side.
Can somebody help me to troubleshoot the issue, please? 

Thanks.
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