I have a dynamic mic connected to IN 2 on Behringer UMC204 and from Main left out, I try to connect to the Bela adc~ 1 and adc~ 2. There is signal going into the interface but is not heard from the speakers that are connected to the Audio left out on Bela

It is pitch tracking using sigmund. At first, I connected Mic through XLR to Minijack to Audio left and right IN on Bela. It worked but the signal was very low as I don't have a dedicated preamp. Therefore I used the interface but the sound is not audible at all.

....

so try with this patch on Bela:

[adc~ 1 2]
|        |
[*~ 10]  [*~ 10]
|        |
[dac~ 1 2]

do you hear anything coming out of Bela? (It may get loud because of the *~ 10)

Mic XLR male was connected to the IN 1 on Behringer via the TRS adapter. I just directly connected XLR to the IN 1, and it fixed. Thanks for the quick responses.