If the domain name is already classed as premium domain at the time of first-purchase, given the registrant has been informed, the registrar can change the renewal price to as much as they require. If it was a standard-rate domain at the time of first-purchase, even if the domain get reclassified as premium, the renewal price has to be the standard-rate.
If the domain name is already classed as premium domain at the time of first-purchase, given the registrant has been informed, the registrar can change the renewal price to as much as they require. If it was a standard-rate domain at the time of first-purchase, even if the domain get reclassified as premium, the renewal price has to be the standard-rate.
https://domainnamewire.com/2022/06/24/can-registries-reclassify-your-domain-as-premium-before-renewal/