Same here. I really think they exclude i.a. trainers of level 40 anyway. NONE of my 40 lvl.colleagues, no matter what team and what ridiculous amount of raids completed, received an invite as yet. So yesterday, we battled a gym that was later selected for Ex Raid, but no invite for me again. And btw. one player with second account, who is actually also level 40 at his main account, received the Ex Raid invite for his 2nd, low level one. Ex Raids are perverse.