for example - with all the open land around me, I cannot summon a lvl 5 purge now - I was able to an hour ago but not anymore. (the sandstorm stuff in front is not mine, and I have been trying to catch the clan members online for 2+ Weeks to work out arrangements but they just reset timers on items recovered from another clan that hasnt been on in a month):
, still seems like lots of open area to spawn a purge: