As already mentioned by Ingo2711, your iPad is obsolete and unsupported. In addition to having no hardware support, the installed version of iOS and installed Apps have not been updated in years.
Along with other early-model iPads, the iPad1 is a 32-bit architecture device. All 32-bit Apps have been retired and removed from the Apple App Store - and as a consequence cannot be downloaded or reinstalled should the need arise. Your iPad and Apps will have many unpatched security vulnerabilities that may compromise the security of your personal data. It is inadvisable to use a vulnerable device for anything sensitive or financial - in particular banking. As side-note, many financial institutions require that you use a "supported" Operating System and associated software when accessing their services, this potentially being enforced at a technical level.
As for WiFi and internet access, your iPad does not support modern encryption standards employed by the majority of WiFi Routers that are used to access your internet connection. This is a common cause of difficulties joining WiFi networks; if the WiFi network uses WPA3 encryption, your iPad1 will not be able to join the WiFi network.
In summary, you would be best advised to replace your iPad1 with a much newer or current model iPad that is capable of running at least the current version of iPadOS. This investment will ensure that you continue to enjoy useful utility for a number of years to come - while ensuring that you can safely and securely access online services.
