Error message on Cerbo GX

My Cerbo GX is connecting to a wifi network but the portal data is not u0dating since 14 days.
I get the following msg: error msg: (“bad handshake: error([ssl routines’,‘tis_process server certificate’,‘certificate verify failed’)],)”,)
any help?

Have you rebooted the Cerbo, do you have the setting to enable a reboot after a certain time on loss of connection to VRM. I also have my router on a scheduled reboot to try and minimise connection losses.

yes, I used to have to reboot it every now and then but about 2 weeks ago that didnt work anymore and then I got the error message.
no luck right now, I am wandering if it is a problem with the Cerbo itelf