Hi, I am having issues with connecting new simplera sensor. Basically it's being found, and then after 30 seconds or so I get notification device not found. I tried sensor no 3 in a row and I don't want to use up my whole surplus if it's going to happen like this with each one. Plus injecting for the 4th time is no fun... is it a known problem, how can I resolve it? I'm on pump 780g.