Hi together,
thanks for your responses! :-)
I'm running the latest TWS API version and the most recent TWS version. As described, this TWS version seems to be flawed since I cannot reliably request delayed (!) market data. I would love to use this version, really, but it drives me crazy.
Later, I discovered the files section of this group and under API old versions, you can find a 972.1x TWS which I've downloaded and installed. It was built on 20th February 2020 (so roundabout two years old) and I can easily log in. There is only the message, that I should update. I then started my client without changing anything (!), I didn't even change to another TWS API version. Now, it runs absolutely fine - no problems anymore, delayed market data runs in very fast and without any issue. I guess, that this should be enough of a proof that newer TWS versions seem to be buggy regarding this type.
@Richard: To be honest, my plan is to subscribe realtime data later. As for now, I want to use the delayed data because I'm still developing my application (thus I don't need realtime data for now) and ironically, I also want to check how stable and realible the TWS API is before I'm going to invest any money on that. ;-)
Do you know a channel or an IB mail address I can report this issue to? I only found the contact form which allows to enter 200 characters or something like that, which is not enough to describe this problem.
Best regards
Andreas
