Yes, the iCash Currency Manager updating system is broken. I confirm, after about a decade without a single issue, it has stopped working. The data provider used by iCash, Yahoo!, has discontinued the service.
I am already working on a fix. Actually it is more than a fix, all the system has to be rewritten. We have decided to use CurrencyLayer as the new data provider. iCash will use a system we have developed last week running on maxprog.com that will provide this service with a caching and error recovery system. We just finished the testing phase. Now we have to update iCash to use it.