Couple of things from experience:
1. Kodi seems to like IP adresses more than names so if it's browsed to smb://MYCOMPUTER/share it might work better if you edit the source to smb://192.168.1.105/share
2. If the PC is running windows, have you got any accounts and passwords set up?
It's an Android reminder as you are in "immersive mode" so you won't see the normal buttons at the bottom of the screen unless you swipe down.
I think i only saw it once on my phone, so maybe there's an OK button or something so it knows not to tell you again?
I'm in the UK where we have digital free TV over the air (there is no analogue service). I get about 140 channels or TV and radio including all BBC and ITV offerings. The box I got for free from my phone/broadband provider (TalkTalk) also gives me access to 7 SKY channels via IPTV as well as on...
You might want to consider getting a Real debrid account. There are a few 1080 sources on there (actually more for TV than movie). In Genesis it will show whether its 1080 or HD before you select the source.
Or you could sit further back from the screen ;)