Rated 4 out of 5 stars

Cannot save options at all !
Xubuntu 15.10
Thunderbird 38.5.1
ReminderFox 2.1.5.4

This review is for a previous version of the add-on (2.1.5.4). 

Rated 4 out of 5 stars

Cannot save calensar file at Unicode path - see "/4@>/3) (:>;0/4_0;5=40@L".

This review is for a previous version of the add-on (2.1.5.4). 

Rated 5 out of 5 stars

FIXED
I cannot move event from ReminderFox to Ligthning calendar by change calendar`s name in ReminderFox event options (from Lightning calendar - I can view ReminderFox calendar in it).Xubuntu 13.10, Thunderbird 24.2.0, ReminderFox 2.1.4.1.With ReminderFox 2.1.2 I can do it.

This review is for a previous version of the add-on (2.1.4.1-signed). 

Sorry about that! Can you try this update to see if it resolves the issue:
https://addons.mozilla.org/en-US/firefox/addon/reminderfox/versions/2.1.4.2

Rated 5 out of 5 stars

Can user see ReminderFox`s icon in Thunderbird`s toolbar without reminders (only icon)?

This review is for a previous version of the add-on (2.1.4.1-signed). 

If you go to ReminderFox Options -> Firefox tab, under the Status/Addon Bar section, set the Limit Text to 0 Characters option to 0. Then you won't see any text. Hope that works for you.

Rated 5 out of 5 stars

FIXED :)

This review is for a previous version of the add-on (2.1.4.1-signed). 

Sorry for the troubles! Please try the latest update which has resolved these issues:
https://addons.mozilla.org/en-US/firefox/addon/reminderfox/versions/2.1.4.1