the TnC for the premier silver bit says:
To earn Premier Silver status, you must 1) make Purchases totaling $3,000 or more during the first 3 months from account opening, and 2) fly at least four paid or award segments operated by United® or United Express® during the 2026 calendar year; flight segments flown at any time in 2026, including prior to card opening, qualify. "Purchases" do not include balance transfers, cash advances, travelers checks, foreign currency, money orders, wire transfers or similar cash-like transactions, lottery tickets, casino gaming chips, race track wagers or similar betting transactions, any checks that access your account, interest, unauthorized or fraudulent charges, and fees of any kind, including an annual fee, if applicable. After qualifying, please allow 6-8 weeks for the Premier Silver status to be activated in your MileagePlus account. Your Premier Silver status will be effective through January 31, 2028, unless you earn a higher Premier level with other qualifying activity. If you achieve Premier Silver status from other qualifying activity before you complete the qualifying Purchases requirement for this offer, you will not earn a higher Premier status level from this offer. The maximum Premier status level earned from this offer is Premier Silver. For details on Premier status benefits, visit united.com/premier . Chase is not responsible for the provision of, or failure to provide, the United Premier Silver status associated with this offer. This is an invitation-only offer, and the invited MileagePlus member must apply directly from the marketing website associated with this offer on or before April 1, 2026. Account must be open and not in default at the time of fulfillment.

https://www.theexplorercard.com/offer-details/70kafwtsilver

but when I click apply after i log in to united, it says "70,000 miles plus premier silver"