You can apply for an Elite Visa even if you overstayed in Thailand in the past. However, if your overstay record is during your current stay, then you will need to exit Thailand before being able to affix the Elite Visa to your passport.
"We are extremly satisfied of your first report of 5 pages regarding our next trip to Thailand and Vietnam in October 2022.
We feel safe in your hands and have got all the answers to our questions on zoom with you two, even more.
We apreciate the accuracy of your proposals & answers from our needs.
We will work on the plan that you sent to us and then feedback to you."