I installed Textra to my wife's Xiaomi for the sole reason that her long messages get converted into MMS - while she has a plan with unlimited SMS, MMS is paid extra. Unfortunately due to poor quality control on your part, this setting is not working for group chats and, as she uses the phone for her small business, sent a long group message to her clients. This resulted in 140 MMS sent, and several messages not delivered. The messages cost her about $10 (250 CZK) not to mention possible lost sales due to messages not delivered. I am very disappointed in your app and will switch to a different one soon. I'm sending you this, so you know there is something wrong and that you'll have a chance in the future to make it right.