Updated text

app/src/main/res/values/strings.xml

@@ -2233,7 +2233,7 @@
     <string name="title_debug_info">Debug info</string>
     <string name="title_debug_info_remark">Please describe the problem and indicate the time of the problem:</string>
     <string name="title_crash_info_remark">Please describe what you were doing when the app crashed:</string>
-    <string name="title_debug_info_issue">Problem description</string>
+    <string name="title_debug_info_issue">Problem description (required)</string>
     <string name="title_debug_info_contact">We recently had contact about this problem</string>
     <string name="title_unexpected_info_remark">Please describe what you were doing when you got the error:</string>
     <string name="title_issue_subject" translatable="false">FairEmail %1$s issue</string>