Recently getting disconnected if not trading for a few minutes

[ellerena]

Hello,
I've been using my custom pyetrade based application for over a year without any issues.
Since April/2026 started, I'm getting disconnected from the server if I don't trade for minutes (10-20min).
My application logs in and then polls ticket quotes every 100ms. That works ok all the time. Then, if I don't place a buy/sell for that time, when I place a new order, I don't get a response, instead the connection get disconected:

requests.exceptions.ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))
Aborted

Again, this tool has been working ok for over a year. Just since last week it started showing this behavior.
Called Etrade to ask whether thy have changed any policy... but they haven't. They are going to extend my token time thought I doubt that's the problem because getting ticket quotes in the background is working ok.
Read somewhere that too many requests per minute may trigger these problems. I'm reading a ticket quote every 100ms, wondering if that's ok or should be adjusted. (again, this thing worked ok before).
Anyone seeing same or having any suggestions?