First the time difference to the UK: In your post where you say it is 10:35am it has come up as "Posted by Cheong Tsoi on Feb 11, 2019 2:35 am". This indicates 8 hours time difference. At the end of March in the UK we go on to daylight saving so that may reduce the difference to 7 hours (if your clocks do not change).
There is no holiday currently, though the person(s) dealing with the rejoining mailbox may have taken time off. If you still have no response this week you can try forwarding your message to membershipservices@theiet.org.
First the time difference to the UK: In your post where you say it is 10:35am it has come up as "Posted by Cheong Tsoi on Feb 11, 2019 2:35 am". This indicates 8 hours time difference. At the end of March in the UK we go on to daylight saving so that may reduce the difference to 7 hours (if your clocks do not change).
There is no holiday currently, though the person(s) dealing with the rejoining mailbox may have taken time off. If you still have no response this week you can try forwarding your message to membershipservices@theiet.org.