Retailer 3.4 and later cannot be installed on Windows 7. See HERE
Alert: Retailer requires the OpenAI API access. This is a separate billing process to a ChatGPT (Plus or Pro) subscription which is not required
OpenAI requires you to pre-purchase Credit. You can check your OpenAI Credit on their Billing page HEREGoogle Gemini does offer a free account, so you can certainly try it out that way. However, we recommend using a paid account for a more reliable experience.

Interruptions to Google Gemini API services will be published on their Status Page HERE
Interruptions to Anthropic's Claude API services will be published on their Status Page HERE