I’m sorry to hear that you feel like the All-in-One WP Migration plugin is using a fake backup size to try and trick users into buying the pro version. We take all feedback seriously and want to assure you that this is not the case.
The size of your backup is determined by the amount of data that is included in it. This can vary depending on the size of your website, the number of files and database tables it contains, and the level of detail you choose to include in the backup. If you are having trouble creating a backup that is within the limits of your hosting plan, it may be because your website is very large or because you have selected to include a lot of additional details in the backup.
We understand that it can be frustrating to encounter limitations when using a free product, but we hope you can understand that we need to offer paid versions of the plugin in order to continue developing and improving it. If you have any other questions or concerns, please don’t hesitate to reach out to us.