Webinar / eSeminar / TechTalk content missing

Hi, 
how can I access the content of the webinars: 
- The Qonvergence Quartet: Simulation Success in a Nutshell (2025-03-26) 
- Substructures and Linear Dynamics (2023-03-23) 
They are not listed here: https://r1132100503382-eu1-3dswym.3dexperience.3ds.com/community/swym:prd:R1132100503382:community:39?content=swym:prd:R1132100503382:wikitree:uTIn2K89SEWGsPLfxvzz7g
Best regards
Stefan