FWIW if you have the ability plug in cameras, I was never impressed by Arlo’s quirks, viewing and recording limitations or pricing or the trouble and slowness of accessing video within SmartThings mobile app. I use a couple outdoor “Amcrest ProHD Outdoor 4-Megapixel (2688 x 1520P) WiFi Wireless IP Security Bullet Camera - IP67 Weatherproof, IP4M-1026B (Black)” for $209 at Newegg.
These are super high quality day or night compared to Arlo and easy on wifi bandwidth with HEVC/h.265 efficiency and record on motion with Blue Iris on an old Windows PC. Blue Iris also makes HTTP(S) requests via IFTTT Maker to Smartthings to turn on almost instantly (2 to 3 seconds) lights, alerts, virtual switches, or whatever when video motion is detected in certain modes or presence scenarios. Live view and motion triggered recordings are accessible in about 2 seconds load time with the Blue Iris Android/iOS app.
Recordings (with user configurable pre-motion/pretrigger duration) are also uploaded within seconds to Google Cloud Storage for almost nothing in Cloud cost per month. If someone breaks in and takes the old PC, I can still view the recordings from the Cloud storage bucket.
The Blue Iris web server also supports viewing live video reliability in ActionTiles and video streams live without issue whenever the dashboard is running on the wall.
It probably sounds more complex than it is. It all just works and takes care of itself. Old files archive and delete themselves from the cloud, and surveillance is never impacted by ST (or Arlo) integration outages, app loading slowness etc.