Have you tried with the Workstation (software on your pc) or the web interface?
Until end of 2020, “Switzerland accounts are under IB UK entity at IBKR, and PRIIP and MiFID is applicable” was not the case. Maybe this has changed or maybe the customer agent is wrong (this happened in the past).
I don’t know if @Leap @Voodoo @MUFC_OK have the same issue as there are new clients
https://forum.mustachianpost.com/t/interactive-brokers-for-dummies/