I couldn't trade it all day either. Not sure which platforms could?? Both EVDR and CRTC were listed with way different bid and asks. This could be the result of some bids not registering once the ticker change happened. It dropped from like 30M to 100k with no volume. Then possibly some stop/loss orders kicked in? Really don't know why anyone would sell at trip ones when there is a name change and this hasn't hit trip ones in years...