Can't edit PDF file

So, I am working through an estate resolution and got a pdf from a financial institution.  I opened it in Acrobat Reader on a PC and was able to fili in the form and check the boxes.  I brought the file back home weith me and need to make some changes but it doesn't work on either my Win 10 or win 11 PCs with Acrobat Reader???  I can't edit the text lines or make the check boxes.  Is there a solution for this?  And, no, I am not getting a subscription to full Acrobat for this one-time use.