While we strive to ensure high compatibility, we cannot guarantee that our EAs will pass MQL5's validation checks, as their requirements are constantly evolving. That said, both Havana and Apexium Pro successfully passed MQL5’s validation at the time of their original release.
However, due to potential updates to the platform’s criteria, you may need to make adjustments to the code before listing on the MQL5 marketplace. This is typically a simple process—many developers on platforms like Fiverr or Upwork can make the necessary modifications for under $100. Just keep in mind that ongoing updates to MQL5 rules may occasionally require further tweaks to maintain compliance.