The BW16 module should be still available, BW16 Ai-Thinker | C2764067 - LCSC Electronics
Alternatively, you could refer to this post on how to contact Realtek regarding purchasing of other modules.
The BW16 module should be still available, BW16 Ai-Thinker | C2764067 - LCSC Electronics
Alternatively, you could refer to this post on how to contact Realtek regarding purchasing of other modules.