Unsure if this is where to post about this but the other night while running a game I discovered that the Run button for encounters I had created was just gone.  I have a DM subscription which is paid until mid 2021, so not being up to date shouldn't be an issue.  I tried making new encounters and those as well don't have a run button.  I spoke to a couple of other dm friends of mine and they could all run encounters as normal.  I am at a loss and can't seem to find anything helpful online about this. 

I believe you can find answers here:

https://www.dndbeyond.com/forums/d-d-beyond-general/d-d-beyond-feedback/combat-tracker-feedback/75965-combat-tracker-gone

Yup, that was the problem.  My browser was blocking something.  All good now thanks for the tip!

what was the problem? the link IamSposta posted is down and i´m having the same problem.

I’m sorry, it’s been a while so I can’t recall the exact solution but it had something to do with the browser I was using needing updating or a setting changed. I wish I had more of an answer for you. 

I have this problem and I thought it was my browser (i use opera) so i downloaded chrome and continued to have the glitch

I have the same issue - any luck resolving it? I've tried to disble VPN, change browser, diable adblock and still no luck!