Could you please explain the process of purchasing coins on Seedify in a step-by-step manner? Are there any prerequisites or requirements that need to be met before making a purchase? Additionally, are there any fees associated with buying coins on the platform, and if so, how are they calculated? Furthermore, what payment methods are accepted on Seedify, and are there any restrictions or limitations to be aware of? Finally, can you provide any tips or recommendations for first-time buyers on the platform to ensure a smooth and successful transaction?