Problem with enabling System Audit (Firebird's Trace and Audit Services)
There are a number of things wrong with your config file:

enable true should be enabled true
log_filename C:\DB_trace\audit_trace_database.log should be log_filename C:\\DB_trace\\audit_trace_database.log
log_connection true should be log_connections true
log_transaction true should be log_transactions true

Most of these errors could have been detected by inspecting the firebird.log file.
And although the documentation in fbtrace.conf says:

Pattern is either database name without path or &quot;SIMILAR TO&quot;-based
regular expression which is matched against fully qualified database
path name.

It looks like you always need to actually specify a SIMILAR TO pattern matching the path of the database, for example %[\\/]WAPTEKA.FDB.
The corrected entry, which works on my machine, is:
&lt;database %[\\/]WAPTEKA.FDB&gt;
  enabled true
  log_filename C:\\DB_trace\\audit_trace_database.log
  max_log_size 0
  include_filter %(INSERT|UPDATE|DELETE)%
  log_connections true
  connection_id 0
  log_transactions true
  log_statement_prepare true
  log_statement_free true
  log_statement_start true
  log_statement_finish true
  log_procedure_start true
  log_procedure_finish true
  log_trigger_start true
  log_trigger_finish true
  log_errors true
  log_warnings true
  log_initfini true
  log_sweep true
  time_threshold 0
  max_sql_length 65536
&lt;/database&gt;


The syntax in Firebird 3 is slightly bit different, check the Firebird 3 release notes for details