bug on file multibanco-e-ou-payshop-by-lusopay.php

please update line 125 and 153

insteadf of

add_filter( ‘plugin_locale’, ‘lusopaygateway_lang_fix_wpml_ajax’, 1, 2 );

should be

add_filter( ‘plugin_locale’, array($this,’lusopaygateway_lang_fix_wpml_ajax’), 1, 2 );