What did you change?
That sketch was originally written for the emonTx V2, therefore unless you have changed the I/O pins, they are wrong for your emonTx V3.2.
You must have changed those in 2015 to make the sketch work then.
This might help (change the name to emonTx IO-all.html)
emonTx IO-all.html.txt (6.1 KB)
From memory, I do not think there are any other changes you must make, but my emonTx V3.2 is being used for a long-term test, so I cannot run a test for you. But if what I have already written does not solve the problem, post again.