When I place a call the receiver cannot hear me
You might try the following:
Hi @vivianm.pyxps7 - if refreshing the RW activation, as suggested by @cbwahlstrom, does not help please share what phone you have and how recently the problem started. This could help the Community narrow down the solution.
As examples –
Have you recently installed any screen protectors or case? There have been instances when they caused a problem.
Have you recently installed any 3rd party apps? Here is a list of 3rd party apps that are problematic with RW.
Fingers crossed the problem is easily corrected by refreshing RW activation