Delay in receiving emails with /

Since the last updates I have a delay with the reception of emails via Skynet/Proximus.
I contacted the provider who advised me to delete the account information on EmClient and to start the configuration again.
Despite this, the problem persists. Emails are received several hours late. However, they are accessible and visible from the Internet.
If I completely turn off EmClient and restart the application then they immediately synchronize and receive the emails
Thanks for your help