Great app but not in background?

Tried this and two other SIP apps, Media5 and Zoiper. Adore is clearly the easiest to configure, and was operational within minutes. Love the clean interface and simplicity of design. Offers G729 codec at no additional charge. This app also uses very little battery power.

However, cannot find a setting to allow background operation. Thus the app has to be in the foreground or I do not receive calls. Additionally, there needs to be a way to strip out special characters, -/:;(), from phone numbers in the contact list. Without this ability the contact list is unusable since the app tries to use those characters when placing a call.

Would happily pay for an updated version since this app shows so much promise.

pghedges about Adore SIP Client, v5.2