Hello,

Textastic uses libssh2. The latest version of libssh2 supports the following key exchange methods: diffie-hellman-group1-sha1, diffie-hellman-group14-sha1, diffie-hellman-group-exchange-sha1, diffie-hellman-group-exchange-sha256 (see https://www.libssh2.org)

If your server doesn't accept one of these, Textastic cannot connect, sorry.

Hello, you can change this by disabling the following setting in your device's settings:

General -> Keyboard -> "." Shortcut

And on your iPhone? You should see it in the same list there and be able to download it.

What do you see when you search for "Textastic" in your Purchased section on the App Store?

1. Open the App Store app, then tap Today at the bottom of the screen.
2. Tap  or your photo in the upper-right hand corner, then tap Purchased.
3. Search for "Textastic"

You should see two entries for Textastic if you have purchased the old version and the new version with your account.

Hello, there is only one version of Textastic for iOS available for purchase on the App Store at the moment: Textastic 6. This is a universal app that works on both iPad and iPhone.

Please have a look at the Purchased section on the App Store to redownload the app on your iPhone. See https://support.apple.com/en-us/HT201272 for details.

Hello, you can change the syntax definition in the File Properties popover without changing the file extension. The chosen syntax definition will from then on be used for all files with the same file extension.

Hello, you first need to navigate to the folder in the "Remote" section to which you want to upload the file before tapping on the Upload button.

I'm sorry, but per-file read-only mode is a very specific feature request that I think most users won't need.