Newbie indeed. Your miner needs to find a share, submit it to the pool and be
accepted before anything shows up on the dashboard.
Your miner is "working" in the sense it's hashing nonces but it will
likely never find a share and submit it to the pool. Groestl is just too difficult
for a CPU, or even a GPU, It's ASIC only for that one.
Try something a little more CPU friendly, at least until you know what you're doing.
There's a lot of discussion and choices about coins that are mineable with a CPU.
so ...whichs coins would be cpu friendly in 2020?