A:AnswerMaybe try separating them a bit more from each other. You can try going into your Arlo account and testing it. Another option would be to arm it, go out and walk around/make motion where it is and see if its recorded on both cameras.
A:AnswerYou can also get a different mount the I use outside, It has a stalk (about 4 inch's tall) a screw in connection for the camera and holes in the base plate where you can screw it into the mounting surface. I have mounted to wood, hardy board and to bricks at different spots around the house. Look at their site for that outer mount. If you use a masonry bit you should be able to drill holes in the concrete and use wall anchors to allow the screws to bite.
A:AnswerThe motions remain on for 10 seconds and then depending on the level of plan you purchase it can go as little as 7 days (up to 1GB) for free Or you can purchase up to 60 days (100GB) for 14.99/month. As long as you have the cameras on a schedule to record you watching T.V, the free option is just fine. It also depends on the quality of picture you have it set to.
A:AnswerOnly referencing the battery versions. Once recording only does 10 second intervals and that cannot be changes. Records to cloud unless you go with powered and higher versions. How long those recordings can be saved depends on if you do free or paid subscription.
A:AnswerIf you go on line, download the app and this will also give you access to the Arlo community, where you'll find lots of questions & answers from fellow Arlo users.