AbortedException: Connection could not be created while going offline mobile iOS app

Using the latest eM Client iOS mobile app V10.5.387 on OS26.6 that if I use my NBN 500mbps fibre connection with my wifi modem on 2.4ghz or 5ghz, I randomly get the below error in the log when synching my Gmail account.

When this error happens I’m still connected ok to the Wifi and other mobile email apps and browsing continue on fine. I only recently changed to the faster 500mbps Internet connection from a 50mbps connection & never experienced this before.

Error - AbortedException: Connection could not be created while going offline as per example screenshot below.

eM Client mob app “does keep automatically trying” and “eventually does sync ok” but takes way longer due to the random connection errors happening.
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However if I use my 5G cell / mobile connection with my same mobile phone “I don’t get that error and syncs perfectly”. So the random error is only on Wifi. So I don’t know if this is a Mobile App issue with the faster 500mbps connection, or a Wifi ISP to Google routing issue, or Google Mail server issue at the server end loosing the connection.