Check who you are primarily doing missions with. I had about 15 storylines...only 2 were encounters. That was on s days worth with afk timers.

Thouht i would weigh in on this asso many saying it does not do missions ive only been running it for a couple of days and being the paranoid i am i watched it most of the time so far ive seen it take every storyline and complete them except for the encounter ones which i have to do manually

It does storyline missions fine. For trades make sure u have ore in home station. Courier storyline missions it should accept normally and add to bottom of mission list. Check storyline module enabled.

Oh, just realized OP was 1 year old...

Similar situation here.
I have more stand by storiline mission that the bot do not accept, even if was already doing more of them before lvl 4.
Last night I notice that the bot reject one disrtibution storiline, that was having blueprint reword.
Unfortunatly I notice to late for pause him before delete that mission from the list.
Only now I figure out to disactivate the cleaning off "clear non important mission" aftrer i loost looot storiline.
I have one supposition about this "issue" Can be the fact that mean time do other mision and having occuped cargohold, he recognize that have no enough space for storyline ore and continuos delay them ?
Need to test limiting the maximun mission to 2. Maybe this way, will remain cargohold space for the ore and start to accept storyline !?

What ships did You guys use for Courier ?
I do missions with my pvp char that can only fly Itteron 4, but I think to change this on mining char and use Occator, Orca or maybe even Freight (if is not proove to slow).

Can be shifted 2 accounts once on few days ?
I mean...to mine 2 days with 1 char, then do mission with 1 and mine with 2, just to diversificate the role.

Bot may reject storyline missions if no direct high sec route exists to complete the mission. Need to know start and end of the mission to check.

Any cap ships will be slower then Iteron I think.

Serial bound to the license may be switched, but not recommended to do every now and then. Server has not 100% uptime and you may find your license corrupted.

All the storyline that are in standby (about 20) ae only in high sec. I can only do them manual.
I try different setup, I have all the ore in home station, but no positive result.
Another problem is when i open the evepilot and other char in normal mode (installed on other folder), the pilot get closed and close my other char to.
In theory..this would not have to hsppend, right ?
I setup the pilot to min0 max 0 to finish all normal missions, and the try to open it in different setup hoping that start to make storilyne.
Instead..just close me both chars.