I tried using ViaBTC's LTC stratum+tcp URL etc in my Nano 3 and had it run for a day, when I went to my account and looked under LTC in the Pool section no worker showed up, the only place a worker showed up was under Smart Mining and BCH even though I had the correct URL info. This is what I used "stratum+tcp://ltc.viabtc.io:3333" and I put the one for each of the other ports they list under LTC plus my worker and password but it started using their smart mining (bch). So, I
This shows that Viabtc developers did a great job, I don't know if any other pool would automatically switch your miner connecting to scrypt stratum to SHA256, I think other pools (or most of them at least) would just disconnect you right away and you won't find your workers in any dashboard, as Paid2 mentioned above, you are using the wrong algorithm for the right miner, so Viabtc switched you to SHA256 smart mining (which is probably the best thing they could do since they don't want to force you to a certain coin), and just so happened that their algorithm found that BCH was the most profitable SHA256 coin at that point which is what "Smart mining" is all about.