I doubt a lack of "new computers" is the problem, but https://directpay.irs.gov/directpay/payment https://directpay.irs.gov/directpay/payment currently reads:

I doubt a lack of "new computers" is the problem, but https://directpay.irs.gov/directpay/payment https://directpay.irs.gov/directpay/payment currently reads: Direct Pay This service is temporarily unavailable. We are working to resolve the issue. Please come back later and try again, or you can visit the Make a Payment page for alternative payment methods. We apologize for any inconvenience. Note that your tax payment is due although IRS Direct Pay may not be available.