Add more language support or a bypass of the symbol and language limitions when targeting specific countries.
A lot of advertisers may want to only show ads in specific countries (eg. Lithuania), and the available language options aren't enough. I understand that adding more language support would take a long time, so I'm suggesting a sort of bypass of the available languages. If you're only showing your ads in one country, you could just select an option that allows you to use the main language of the targeted country. Those ads could still be checked by the system for basic grammar and certain symbols, but the final verification could be done manually.