How to translate "transparent communication" to Mandarin?
Nowadays 透明 can also mean transparent in the sense of openness as a calque from English.

Though 透明沟通 or 透明的沟通 indeed sounds a bit weird to me. But 开放透明的沟通 (open and transparent communication) is okay. 透明的沟通机制 (transparent communication mechanism) and 透明的沟通平台 (transparent communication platform) are fine too.

Edit: I would translate "a new paradigm of transparent and accountable communications" as 透明且负责任的沟通新范式.