I've seen the subject of covenant auto-summons being discussed on multiple different forums. From the threads that I've read, I gathered that the community has agreed upon an ideal location, maximum weapon upgrade, and level range to be summoned for Watchdogs of Farron. However, I can't seem to find a similar consensus when it comes to ideal summon criteria for Blades of Darkmoon or the Blue Sentinels.
Is there a generally agreed-upon ideal location, maximum weapon upgrade, and/or level range for being summoned in either Blades of the Darkmoon or the Blue Sentinels? Are there other criteria that need to be met that I haven't mentioned (besides having the covenant item equipped, of course)? It took me 45 minutes to get one Proof of a Concord Kept by farming silver knights, and the idea of spending 20-ish hours to get the other 27 I need is not very appealing.
Best Answer
It's not just you, a lot of people have been having issues getting summoned as a Darkmooon or Blue Sentinels, and folks are pretty confident it's a bug, despite FROM saying otherwise. The good news is that there does appear to be a work around you can use, provided you're on PS4 or PC. You can find the links to the solutions here.
For PS4 folks have found that making a brand new account fixes the issue, although no one is sure why. Definitely worth a shot though. For Steam you need to make a new account as well, and then set up Family Sharing so that you can play Dark Souls 3 on the newly created account. You can transfer your save over to the new account) by replacing the save files in the new account with the ones from the old account, but some folks have reported that transferring the save didn't work, so you may be forced to start a new account if you want to do Darkmoon/Blue Sentinels coop.
So, in short, the whole thing seems to be broken and the only workarounds are kind of terrible, but there are workarounds. Once it is all working the range for being summoned is (source) (Host = Way of Blue player, Summon = Blue Sentienl/Darkmoon Player):