Sorry, was busy on another project which I just finished 
New app in development - Tank Level Meter TF-FT002
I just tested SFTP myself with a drivehq account. I have no problems. Are you sure your FTP host supports secure FTP? And are you sure you entered the correct port? I have to use port 21 for secure FTP with drivehq.
I also just tested with SMB on my NAS. And also there I have no issues.
That doesn’t mean there isn’t some problem in the app. It just means I cannot reproduce the issue so it is kind of hard for me to debug if the problem is indeed in the app. I am willing to try your settings on my Homey, but you would have to share your login credentials with me and the SMB/FTP hosts must be available on the internet. Give me a DM if you want to try this.
