USCIS这个extend flexibility for responding 啥意思

楼主目前身处美国境内，再办F签证的身份转换。两周前也就是5月中旬收到USCIS的RFE，信上给的deadline 是6月14。但是在USCIS网站上面大红色的USCIS Respond to Coronavirus里面发现这一条：
USCIS will consider a response received within 60 calendar days after the response due date set forth in the following requests or notices before taking any action if such request or notice was issued by USCIS between March 1 and July 1, 2020, inclusive:

Request for Evidence;
Continuations to Request Evidence (N-14);
Notice of Intent to Deny;
Notice of Intent to Revoke;
Notice of Intent to Rescind;
Notice of Intent to Terminate; and
Request for a Hearing on a Decision in Naturalization Proceedings (Under Section 336 of the INA)
In addition, USCIS will consider a Notice of Appeal or Motion filed on Form I-290B and a Request for a Hearing on a Decision in Naturalization Proceedings filed on Form N-336 if filed 60 calendar days from the issuance of a decision by USCIS, if such decision is was issued between March 1 and July 1, 2020, inclusive. See our alert for more information.

原网址：https://www.uscis.gov/about-us/uscis-response-covid-19



可不可以请大神们帮忙看看这是啥意思? Deadline究竟应该是什么时候?十分感谢！

早点交了得了呗

当然想早点交，但是有些文件需要学校向sevis申请，并不是那么快能弄完的…