I just finished a renewal on Sherpa. I prefer the reliability of ACAExpress, but still using Sherpa for some because that's where 75% of my book is, I have some referral credits still saved up, and the price difference.
The renewal process was giving me a hard time initially. I would click renew, choose the plan, redirect to hc.gov, find the app, and on the landing page after finding the app there would be an error message at the bottom in red. However, the 2017 app was already done apparently (couldn't get the eligiblity results to load). So I just clicked "return to enrollment website". I didn't do anything at all in hc.gov just came right back to HS and finished it up.
The renewal process was giving me a hard time initially. I would click renew, choose the plan, redirect to hc.gov, find the app, and on the landing page after finding the app there would be an error message at the bottom in red. However, the 2017 app was already done apparently (couldn't get the eligiblity results to load). So I just clicked "return to enrollment website". I didn't do anything at all in hc.gov just came right back to HS and finished it up.