Rocket Internet (RKET)

in request #955389 you say that you execution intermediary - Interactive Brokers, as currently, is unable to provide access to the Hamburg Stock Exchange.

Rocket internet is doing the corporate action “Aktienrückkauf mit Andienungsrechten” (share buyback with right to tender).
First, am I right according hdg-hunter-douglas-tender-offer-and-possible-squeeze-out
that I cannot exercise my tender?
Second, what happens after a possible squeeze out?
Finally, when do you sell my shares according your faq
Thanks again for your help!