Problems to add devices in myvolumio (account)

Hello,
I’m new in volumio (version 2023 03 30)…
I install 3 devices:
-1/ Rasberry Pi3 with AMP100
-2/ Rasberry Pi3 with AMP100
-3/ Rasberry pi4 wtih DAC+ PRO

With 1/ device no problem (connecting to myvolumio / podcast / spotify / etc…) everything looks works well, I log with my myvolumio super account (premium). If I try to install an other device first it work as well.

And then every additionnal device are not add in my myvolumio account or in the system and there are not working no plugin access / no update.

I try to reboot all / etc… same problem auto login with 1/ device and logout with 2/ and 3/ devices…

Someone can help?

I was think to edit some log files? but I don’t know where to search

Thanks for helping
Best regards