SMS forwarding broken after months of use

SMS forwarding stops working after months of use — only full reinstall fixes it

Steps to reproduce:

1. SMS forwarding works for months.
1. At some point forwarding suddenly stops:
The "Forwarded messages" list no longer appears(empty).
The forwarding server configuration area becomes uneditable (unresponsive).
1. Updating to the latest version does not resolve the problem.
1. A full reinstall of the app restores forwarding functionality.

This happens every a few months.

Hypothesis: a long history / large log of forwarded messages eventually breaks the forwarding feature.