Cart check out currency showing $ at end of number

Hello, I have two issues with my check out cart.

1.- Amount is showing a comma for decimal and a $ sign at end of number.

i.e. instead of Total $427.93 MXN I am seeing Total mxn 427,93$

this is how I have configured the currency format

2.- I am using a translator and multiple currency app for MXN and USD, and neither one is working once the check out cart process begins.