Probably among the worst planned "technical upgrades" ever (emphasis added):
"Coinbase will be conducting a scheduled technical systems upgrade starting Saturday, March 4 2023 on or around 8am PT. We expect this process to take up to 8 hours to complete, however this estimated time is subject to change.
During this scheduled downtime, trading, transfers, and access to funds on Coinbase.com (Simple and Advanced Trade) and our mobile app [will be unavailable? [sic]]. In addition, any recurring buys will be delayed until the system upgrade is complete. However, you will still be able to access your account during this downtime. Upon completion of the initial technical systems upgrade, we will progressively re-enable trading."
"Coinbase will be conducting a scheduled technical systems upgrade starting Saturday, March 4 2023 on or around 8am PT. We expect this process to take up to 8 hours to complete, however this estimated time is subject to change.
During this scheduled downtime, trading, transfers, and access to funds on Coinbase.com (Simple and Advanced Trade) and our mobile app [will be unavailable? [sic]]. In addition, any recurring buys will be delayed until the system upgrade is complete. However, you will still be able to access your account during this downtime. Upon completion of the initial technical systems upgrade, we will progressively re-enable trading."