Send message to group

[welcometopwn]

I'm trying to send a message to a group, but it seems that the group uses some old jid format because with a freshly created group it's working.

Format of the jid is: 33******[email protected]

The error I get:
WRN: Bad jid format

[juancgarza]

Just curious, what endpoint are you using?

[funukonta]

i got the same error, the enpoint i used is
/chat/send/text
it requires Phone which i fill it with JID i got from /group/list