What just happened? I tried buying a recruit pack and it said there was an error. Then I go to search for a game and it just continued to search?
I have stuff like that happen all the time.... like, when I finally Exit a group I've been doing games with, trying to buy a pack will almost always result in an error. I've taken to quitting MP and then logging back in before I buy packs.
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Meanwhile, I just don't understand some people in MP.
Like.... join a group. There's only three of us (it's taking awhile to add the fourth), we're all mid-level (10, 12, 14), and the lv10 guy is also 10 N7. So the leader switches the game to Silver diff.

Or the game I was just playing. Doing well, not too many random deaths, good scores. Get to Wave 10,
leader quits.

When the game finally reloads, there's only two of us, and for some reason it's restarted at Wave 1.

(Personally, I only play Bronze. I don't have a non-random group to play with, and I've never really played the SP games on higher diff, certainly not more than Hard. The few Silver random matches I've been in have been abject failures, with people dying constantly, that didn't make it past round 6-7. I'd guess the higher diff is better if you have people you know, using headsets, and equipping all-game buffs. And probably picking an enemy so that you can select the right buffs and weapons.)