IB Gateway: API access disabled

Today I can't use any IB Gateway prior to 936.9
If I use an earlier version (tried 926.5, 933.5), it correctly logs on but on the API settings tab there is only a message "API access is disabled".

Is there anyone out there using a gateway older than 936.9?

 

You should have gotten warnings from IB about this. Something like this:

So this is probably your problem.

 

thanks.I'll look again for missed messages like yours