Just changed hosts, images not uploading

check for file permissions and upload folder path and confirm it exists

https://codex.wordpress.org/Changing_File_Permissions

check permissions as described in above URL,they should match.upload folder path option should be under Setting ->Media , if it isnt then you can add following to your wp-config.php file to make sure we have correct upload path

define(‘UPLOADS’, ‘wp-content/uploads’);

oops, just remembered the option was removed in some latest update (strangely on my client’s website it is still there)

i ll suggest to reconfirming file permissions. might be you dont have write access to temp or upload folder. please make sure the file permissions are correct as mentioned in below article

https://codex.wordpress.org/Changing_File_Permissions

also advised is to enable error logging and then try uploading the image and see if error log has some error

https://codex.wordpress.org/Debugging_in_WordPress