unable to submit BAS

Hi Samanthathong84,

Thank you so much for your post and welcome to the Community Forum! I'm sorry to hear about the issue you've been facing. I really appreciate your patience and understanding about this issue, and I do apologize for the delayed response. If you're having trouble submitting your BAS (Business Activity Statement) transaction in MYOB Online due to changes in the form format, I would recommend to Clear your AccountRight Cache and also, ensure that your MYOB software is up to date. Outdated software might not be compatible with the latest form formats. Update your software to the latest version available. 

Please do let me know how you go on this.
Regards,
Earl