If the pc is connected to via wifi, i should be able to access
blue iris via mobile app, correct?and be able to get alert and view cameras.?
If you are where the Blue Iris sever is located (at home on your LAN), the BI server is on the MiFi and your phone is on the MiFi then most likely, yes.
BUT....If the MiFi is at the place where the Blue Iris server is, the BI server is on the MiFi's Wi-Fi and you are AWAY from your house, on 4G/LTE or on someone else's Wi-Fi and open the BI app to view the cams...as I stated in post #12 above, I do NOT think you can view the cams.
Again, I could be wrong, but most Wi-Fi hotspots furnished and supported by cellular ISP's do not provide a public IP for the WAN, which is what you need to access the cams remotely (away from the BI server's LAN) with the BI app. MiFi may be like that...no public WAN IP....
but I'm not 100% sure.
I say this because I have a AT&T 4G/LTE Wi-Fi hotspot since July and after 5 years of being able to view my cams on CenturyLink DSL, I no longer can do so due to not having a public WAN IP as I did with the DSL.
I intend to correct that soon and have the understanding that "Hamachi" (by LogMeIn) or "ngrok" is the solution. I'd like nothing better than to be able to report success right now in doing that, but various personal and health issues over the last 5 months have slowed my progress. I can say that with Teamviewer on my phone, my phone on 4G/LTE and away from my home I can access my PC at home on the AT&T hotspot, so there's hope for Hamachi or ngrok. Using the BI app on my phone is my ultimate goal.
I also hope 2019 will be a MUCH better year for me...and of course, others as well.