Ubuntu crashed and Thunderbird lost all accounts (second time)

This happened at least the second time this month. I'm not sure if it has anything to do with crashing but I noticed that it's the second time all accounts disappeared from Thunderbird like it was freshly installed.

Do you know where is the problem?

EDIT

milano@milano-desktop:~$ ls -la /home/milano/snap/thunderbird/common/.thunderbird/
total 40
drwx------  8 milano milano 4096 čen 30 11:18  .
drwxr-xr-x  5 milano milano 4096 dub 11  2020  ..
drwx------ 12 milano milano 4096 čen 25 21:10  50eiw0ah.default-beta
drwx------  4 milano milano 4096 čen 30 11:18 'Crash Reports'
-rw-rw-r--  1 milano milano  181 čen 30 11:18  installs.ini
drwx------ 13 milano milano 4096 pro 26  2020  ohzvuyl2.default
drwx------  2 milano milano 4096 dub 11  2020 'Pending Pings'
-rw-r--r--  1 milano milano  534 čen 30 11:18  profiles.ini
drwx------  9 milano milano 4096 čen 30 17:56  t5oh24il.default-beta-2
dr

wx------ 12 milano milano 4096 čen 30 13:12  tfk8s9n1.default-beta-1

EDIT2

milano@milano-desktop:~/snap/thunderbird/common/.thunderbird$ cat profiles.ini 
[Profile3]
Name=default-beta-2
IsRelative=1
Path=t5oh24il.default-beta-2

[Profile2]
Name=default-beta-1
IsRelative=1
Path=tfk8s9n1.default-beta-1

[Profile1]
Name=default-beta
IsRelative=1
Path=50eiw0ah.default-beta

[Install4455C541FCCFC69D]
Default=50eiw0ah.default-beta
Locked=1

[Profile0]
Name=default
IsRelative=1
Path=ohzvuyl2.default
Default=1

[Install3F74DF0047DC6711]
Default=tfk8s9n1.default-beta-1
Locked=1

[General]
StartWithLastProfile=1
Version=2

[Install578759B957B8C6D4]
Default=t5oh24il.default-beta-2
Locked=1